please i really need help

Answer: Yes, Sally is correct.

Step-by-step explanation: Both of Sally's statements are mathematically correct, because to begin with the total of the sum of angles in a triangle is always equal to 180 degrees. An acute angle is less than 90 degrees and that means we can calculate three acute angles from a triangle.

Also an obtuse angle is greater than 90 degrees, but less than 180 degrees. That means, a triangle cannot have more than one obtuse angle. If for instance a triangle has an angle measuring 91 degrees (obtuse angle), then the other two angles will be divided between the remainder which is 89 degrees.

Also a triangle can only have one right angle (which measures 90 degrees). This implies that, in a right angled triangle, there cannot be another 90 degree angle, because that would reduce the shape to two angles only (which is not possible).

A triangle can contain at least two acute angles (and at most three acute angles) and all three angles in either case must add up to 180 degrees.

Please refer to the picture attached for more information.

Answer:

Yes Sally is correct

Step-by-step explanation:

We note that an obtuse angle = Angle larger than 90°

Acute angle = Angle lesser than 90°

Sum of angles in a triangle = 180°

Number of angles in  triangle = 3

Therefore, assuming the angles in the triangle are A, B and C where C is obtuse or at least 90°, then we have;

C ≥ 90° therefore taken as obtuse

A + B + C = 180°

A + B  = 180° - C

∴ A + B  = 180°- (≥90°) = ≤90°

Hence A + B   ≤ 90°

Which means A and B are less than 90°, therefore both acute

Therefore, a triangle can have only one angle (C in the above example) greater than or equal to 90° and at least two acute angles A and B in the above example.

Answer:

  A) 24 ft³

Step-by-step explanation:

The area of the right triangle base is ...

  A = (1/2)(3)(4) = 6 ft²

The volume of the triangular prism is the product of the area of its base (6 ft²) and its height (4 ft).

  V = Bh = (6 ft²)(4 ft) = 24 ft³ . . . . matches choice A

_____

Comment on the triangle

You know the 3-4-5 triangle is a right triangle, because you have seen those numbers many times in relation to the Pythagorean theorem. If you don't know that, then you can check to see by using the Pythagorean theorem:

  5² = 3² +4²

  25 = 9 + 16 . . . . . true; so the triangle is a right triangle

In any event, there are other means for finding the area of the triangle based on the lengths of its sides. You will get the same area result.

Using Heron's formula, s = (a+b+c)/2 = (3+4+5)/2 = 6.

  A = √(s(s -a)(s -b)(s -c)) = √(6(3)(2)(1)) = √36 = 6 . . . . area of base triangle

Answer:

M + W <= 40

M >= 12

M >= 15

Total profit =  $26 * M + $14 * W

Step-by-step explanation:

Let the number of men be denoted by M

number of women be denoted by W

Maximum no of people that can go one trip = 40

Therefore representing it mathematically we have

M + W <= 40  -------------- CONSTRAINT 1

Minimum number of men needed on trip = 12

Therefore representing it mathematically we have

M >= 12  CONSTRAINT 2

Minimum number of women needed on trip = 15

Therefore representing it mathematically we have

M >= 15  CONSTRAINT  3

profit on 1 man = $26

profit on M men = $26 * M

profit on 1 woman = $14

profit on M men = $14 * W

Total profit combining for men and women =

 $26 * M + $14 * W  -------------CONSTRAINT  4

___________________________________________

writing together all the constraint

M + W <= 40

M >= 12

M >= 15

Total profit =  $26 * M + $14 * W

The questions regarding swimmers position is required.

The initial height of the swimmer is 14 foot.

The max height of the dive is 23 foot.

The x intercept is [tex](8,0)[/tex]. This means she is at ground level.

It is mentioned that the springboard is 14 foot high.

So, initial height of the swimmer is 14 foot.

The maximum height of the dive will be point of curve which is the highest in the [tex]y[/tex] axis.

That point is 23 foot.

The x intercept is the point where the parabola touches the [tex]x[/tex] axis.

Here that point is [tex](8,0)[/tex]

This means that the diver is at ground level but she traveled a horizontal distance of 8 feet.

Learn more about parabolas:

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Answer: $3,150.00

Step-by-step explanation:

[tex]Formula: A=P(1+rt)[/tex]

Where;

A = amount

P = principal ($2,000)

r = rate (11.5% or 0.115)

t = time (5 years)

Plug this into the formula

[tex]A=(2000)(1+(0.115)(5))\\A=(2000)(1+0.575)\\A=(2000)(1.575)\\A=3150[/tex]

Answer:

"If they add all of the pencils together and then divided by how many of them there, which is 60/5, we can that there will be 12 pencils given to each person."

"Sample Response: Maria should give away 2 pencils. Ted should get 3 pencils. Lucinda should give away 1 pencil. Everyone should have 12 pencils. "

Check all that you included in your response.

Maria should give away 2 pencils.

Ted should get 3 pencils.

Lucinda should give away 1 pencil.

Everyone should have 12 pencils.

Step-by-step explanation:

Question:

1. vertical stretch of 2, horizontal stretch to a period of 2 pi, phase shift of StartFraction pi Over 2 EndFraction units to the right, vertical shift of 1 unit up

2. vertical compression of 2, horizontal stretch to a period of StartFraction pi Over 4 EndFraction, phase shift of StartFraction pi Over 4 EndFraction units to the left, vertical shift of 2 units down

3. vertical compression of 2, horizontal compression to a period of 4 pi, phase shift of StartFraction pi Over 3 EndFraction units to the left, vertical shift of 1 unit down

4. vertical stretch of 2, horizontal compression to a period of StartFraction pi Over 2 EndFraction, phase shift of Pi units to the right, vertical shift of 1 unit down

Answer:

The correct option is;

4. Vertical stretch of 2, horizontal compression to a period of π/2, phase shift of π units to the right, vertical shift of 1 unit down

Step-by-step explanation:

Here, we have the parent cosine function given by y = cos(x)

A plot of the above function is attached

By comparison, it is observed that the transformation required to change the parent function includes;

1. Vertical stretch from the parent function of amplitude 1 to amplitude 2

2. A horizontal compression so that the period of one complete revolution is π/2 rather than 2·π in the parent cosine function

3. Phase shift of pi units to the right such that cos(π) = 1 rather than cos(2π) = 1 as it applies to the parent function

4. Shift of the y values from the symmetrical x-axis origin downwards by 1 unit such that the maximum y value of the doubly stretched transformation is 1 rather than 2

Step-by-step explanation:

Simple

Speed of 1 hour = 51 miles

Total miles = 459

459 ÷ 51 = 9

It will take 9 hours for him to reach his destination

Answer: 30(short piece) 90(long piece)

Step-by-step explanation:

Answer:

3:50pm

Time Keisha went to the park- 1:30pm

Time spent for hiking- 1hour 35 minutes

Time spent at the picnic area- 45 minutes

1: 30pm

+1. 35min

2: 65pm

But 60 minutes is 1 hour so the 65 will be changed to 1 hour 5 minutes making it

3: 05pm

3: 05pm

+0: 45min

3: 50pm

Hence the time Keisha left the park was 3:50pm

Keisha entered the park at 1:30 pm, hiked for 1 hour 35 minutes, and spent 45 minutes at the picnic area, which means she left the park at 3:50 pm.

The subject of this question is Mathematics, specifically addressing the concept of adding and subtracting measures of time. Keisha entered the park at 1:30 pm and spent 1 hour and 35 minutes hiking. To calculate the time after hiking, you add 1 hour and 35 minutes to 1:30 pm, which brings the time to 3:05 pm. She then spends 45 minutes at the picnic area, so you add 45 minutes to 3:05 pm. Hence, Keisha leaves the park at 3:50 pm.

The gradient of the line segment between points (2,3) and (4,7) is calculated using the formula m = (y2 - y1) / (x2 - x1), yielding a gradient of 2.

In mathematics, the gradient of a line segment between two points is the slope of that line. The slope or gradient can be calculated using the following formula: m = (y2 - y1) / (x2 - x1), where (x1,y1) and (x2,y2) are the coordinates of the two points.

In this scenario, the coordinates of the points are (2,3) and (4,7). Using the formula, we substitute the coordinates into the formula to get m = (7 - 3) / (4 - 2) = 4/2 = 2. Therefore, the gradient of the line segment between the points (2,3) and (4,7) is 2.

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Answer:

Step-by-step explanation:

To plot points on a graph, assign x-values to the x-coordinate and calculate the corresponding y-values using the equation y = x² + 2. Connect the points to graphically represent the dependence of y on x.

The given table contains the following points: (1,5), (2,10), (3,7), and (4,14). These points represent the values of x and y in the equation y = x² + 2. To plot these points on a graph, you can assign x-values to the x-coordinate and calculate the corresponding y-values using the equation. For example, when x=1, y = 1² + 2 = 3, so the point (1,3) can be plotted on the graph. By connecting all the points, you can graphically represent the dependence of y on x.

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Answer:

0.8 would be the approximate height

Step-by-step explanation:

you can make an equation and solve for the height (x)

375 = 3.14(12.5^2)x

when you solve this equation, you specifically get 0.76. but your question is asking for the approximate, so you would round it up to 0.8. hope this helps!

Answer:

D. 0.8

Step-by-step explanation:

The formula for finding the volume of cylinders is:

V= (pi)(r^2)(h)

r is the radius and h is the height. V is the volume.

plug in the values.

375 = (3.14)(12.5^2)(h)

375 = (3.14)(156.25)(h)

375 = 490.625 x h

Divide both sides of the equation by 490.625

0.7643... = h

round the decimal to the tenths place and get 0.8

To justify the conclusion that ∠PTQ ≅ ∠RTQ by SAS, the congruent supplements theorem and CPCTC are needed.

To justify the conclusion that ∠PTQ ≅ ∠RTQ by SAS (Side-Angle-Side) in the given triangles PST and RST, we need to use the following:

Therefore, by using the congruent supplements theorem and the CPCTC theorem, we can conclude that ∠PTQ and ∠RTQ are congruent.

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631 is the answer-I’m taking this castle learning rn

Using the normal distribution, it is found that 631 of the 750 incoming students can be expected to be enrolled in the tutoring program.

The z-score of a measure X of a normally distributed variable with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The proportion of students who score one standard deviation below the mean is the p-value of Z = 1, hence it is of 0.8413.

Hence, out of 750 students, the number is given by:

0.8413 x 750 = 631 students can be expected to be enrolled in the tutoring program.

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Answer:

x = 20

Step-by-step explanation:

they are both obtuse angles which means they arent supplementary they equal themselves. so you have 7x-30=6x-10 and then you just do the algebra

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There were 189 in-state students and 54 out of state students.

Total number of students = 243

Number of In-state students will be:

= 7/(7+2) × 243

= 7/9 × 243

= 189

Number of Out of states students will be:

= 2/(7+2) × 243

= 2/9 × 243

= 54

Therefore, there were 189 in-state students and 54 out of state students.

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Answer:

3 x 5 is 15 so it would be 3:15

5 x 5 is 25 so it would be 5:25

Step-by-step explanation:

Just multiply by 5 for each one

3 x 5 is 15 so it would be 3:15

5 x 5 is 25 so it would be 5:25

Answer:

$120.14

Step-by-step explanation:

This question is an example of a compound percentage decrease.

To work this out you would first need to convert the percentage of 25 into a decimal. You can do this by dividing the percentage of 25 by 100, this gives you 0.25. This is because percentages are out of 100.

The next step is to minus 0.25 from 1, this gives you 0.75. This is because we are working out the percentage decrease.

The final step is to multiply the amount of 900 by 0.75 to the power of 7, this gives you $120.14.

1) Divide 25 by 100.

[tex]25/100=0.25[/tex]

2) Minus 0.25 from 1.

[tex]1-025=0.75[/tex]

3) Multiply 900 by 0.75 to the power of 7.

[tex]900*0.75^7=120.14[/tex]

Answer:

If you’re looking for the vale after 8 years, I got $90 but I’m not sure if I’m right .

Step-by-step explanation:

Answer:

if x=4 then y=18

Step-by-step explanation:

hope this helps

please mark brainliest ;)

Answer:

Step-by-step explanation:

first, do 4x3. that should equal 12. then, do 12 + 6, or 6 times 3, which equals 18. so, the answer is 18

Answer:

-23

Step-by-step explanation:

Answer:b

b

Step-by-step explanation:

tell me if you got it right.

Answer:

d

Step-by-step explanation

just answered the question

Answer: D

Step-by-step explanation:

Answer:

a.) [tex]hours=13[/tex]

b.) [tex]h\leq 15[/tex]

c.) $[tex]$105[/tex]

Step-by-step explanation:

a.) If she earns $7 'per' hour, this multiplication. After a week, we need to see how many hours she worked to earn $91, so this goes behind the equal sign. Let h be the unknown number of hours:

[tex]7h=91[/tex]

Solve for h. Divide both sides by 7:

[tex]\frac{7h}{7}=\frac{91}{7}\\\\h=13[/tex]

Sylvia worked 13 hours at a rate of $7 an hour.

b.) She can work at most 15 hours a week. At 'most' can also mean less than or equal to. Let h be hours:

[tex]h\leq 15[/tex]

Sylvia can work less than or equal to 15 hours per week.

c.) If Sylvia can work 15 hours, plug in this value for h into an equation when she earns $7 per hour. Let the product of the hours and money equal t for total:

[tex]t=7(15)\\t=105[/tex]

The most money Sylvia can earn in a week is $105.

Finito.

Answer: 3/18 simplified is 1/6

Step-by-step explanation:

5 monkeys +4 giraffes +6 elephants+3 tigers= 18 animal crackers in all.

You would put how many animal crackers there are over the total number of animal crackers, which is 3/18 and then you would simplify it. 3/18=1/6

Answer:

Step-by-step explanation:

a² - b² = (a+ b)(a - b)

1) (2n-4/2n) ÷ (n^2-4/n)

[tex]=\frac{2n-4}{2n}*\frac{n}{n^{2}-4}\\\\=\frac{2n-2*2}{2n}*\frac{n}{n^{2}-2^{2}}\\\\=\frac{2*(n-2)}{2n}*\frac{n}{(n+2)*(n-2)}\\\\=\frac{1}{n+2}[/tex]

2) [y^2-36/y^2-49] ÷[ y+6/y-7]

[tex]=\frac{y^{2}-36}{y^{2}-49}*\frac{y-7}{y+6}\\\\=\frac{y^{2}-6^{2}}{y^{2}-7^{2}}*\frac{y-7}{y+6}\\\\=\frac{(y+6)*(y-6)}{(y+7)*(y-7)}*\frac{y-7}{y+6}\\\\=\frac{y-6}{y+7}\\[/tex]

3) [m^2-1/ m^2-m] ÷ [m^2-7m-8/3m ]

[tex]=\frac{m^{2}-1}{m^{2}-m}*\frac{3m}{m^{2}-7m-8}\\\\=\frac{(m+1)*(m-1)}{m*(m-1)}*\frac{3m}{(m-8)*(m+1)}\\\\=\frac{3}{m-8}[/tex]

Hint :  m² - 7m - 8

sum = -7

Product  = -8

Factor = (-8), 1

m² - 7m - 8  =m² - 8m + m - 8

                   = m*(m - 8) + (m-8)

                   = (m - 8)(m +1)