plz help 13 points 2 questions 7th grade

Answer:

Time, t = 1.875 seconds

Step-by-step explanation:

It is given that,

Initial velocity of the ball, u = 30 ft/s

DeSean throws a ball from a platform that is at ground level. The equation of motion when an object is thrown vertically upward is given by the following equation as :

[tex]h(t)=-16t^2+vt+h[/tex]

Here, h = 0 since, the ball is thrown up at the ground level. We have to determine the time when the ball be in air. The quadratic equation becomes :

[tex]-16t^2+30t+0=0[/tex]

t = 1.875 seconds  

So, the ball be in air for 1.875 seconds. Hence, this is the required solution.                                    

Answer:

net pay

Step-by-step explanation:

"Net" refers to what you get to keep after taxes or any fees,

"Gross" is your total before taxes and fees

Answer: Take-Home Pay is the money a person has after paying off all the things that are forced, like taxes.

Step-by-step explanation: There is none. It's English.

Answer:

D.) is the answer

Step-by-step explanation:

I know this because the ratio of muffins to donuts is 36:63 but simplified is 4:7

The ratio of muffins to donuts is 4:7 if the bakery has 63 donuts and 36 muffins for sale, option (D) 4 to 7 is correct.

It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.

We have:

Number of donuts = 63

Number of muffins = 36

The ratio of muffins to donuts:

36:63

4:7

Ratio is 4 to 7

Thus, the ratio of muffins to donuts is 4:7 if the bakery has 63 donuts and 36 muffins for sale option (D) 4 to 7 is correct.

Learn more about the ratio here:

brainly.com/question/13419413

#SPJ2

Answer: [tex](x+3)^2+(y+5)^2=25[/tex]

Step-by-step explanation:

The equation of the in center-radius form  is the shown below:

[tex](x-h)^2+(y-k)^2=r^2[/tex]

Where the center is at the point (h,k) and r is the radius of the circle.

Based on the information given in the problem, the center of the circle is at the point (-3,-5) and a radius of the circle is 5, then,  you must substitute values into the equation shown above.

Therefore, you obtain the following equation:

[tex](x-(-3))^2+(y-(-5))^2=(5)^2[/tex]

[tex](x+3)^2+(y+5)^2=25[/tex]

Answer:

Step-by-step explanation:

you should show the graph

but

simplify it

The answer is 6y + 52.

Answer:

The answer in the procedure

Step-by-step explanation:

we know that

The zeros of the function are the values of x when the value of y is equal to zero

In this problem

The zeros of the function are the price of a hot dog (in dollars) when the daily profit (in hundreds of dollars) of a hot dog stand are zero

we have

[tex]y=-2(x-3)^{2}+4[/tex]

using a graphing tool

The zeros of the function are

x=$1.59, x=$4.41

so

for these prices the daily profit are zero

see the attached figure

Here's what a net of a cuboid looks like if that was what you were asking.

Final answer:

The question involves identifying a net for a cuboid, which is a two-dimensional arrangement of rectangles that can be folded into a three-dimensional box shape.

Explanation:

The subject of the question is identifying a net of a cuboid. A net is a two-dimensional shape that can be folded to form a three-dimensional object. In the case of a cuboid, its net consists of 6 rectangles that correspond to the faces of the cuboid: top, bottom, front, back, and two sides. To create a net, you would draw these 6 rectangles in such an arrangement that when the edges are folded up, they would form the sides of a cuboid. The question requires understanding of basic geometry and how two-dimensional shapes can construct three-dimensional forms.

Start with

[tex]\dfrac{x}{2}+\dfrac{3}{2}<\dfrac{5}{2}[/tex]

Multiply the whole equation by 2. Since 2 is positive, we don't need to switch the inequality sign:

[tex]x+3<5[/tex]

Subtract 3 from both sides:

[tex]x<2[/tex]

The solution to the inequality [tex]\( p \geq -1 \)[/tex] represents all the values of  p that are greater than or equal to -1.

To represent this on a graph, you would draw a number line with an open circle at -1 (since it's "greater than or equal to", not just "greater than"), and then shade to the right to indicate all values greater than -1.

The open circle at -1 indicates that -1 is not included in the solution, and the shaded area to the right indicates all values greater than -1.

Answer:

tan

Step-by-step explanation:

                                                                (secx - 1)(secx + 1)

Remove parentheses                          = sec²x - 1

Use the identity: tan²x  + 1 = sec²x     = tan²x + 1 - 1

                                                             = tan²x

tan²x = (secx - 1)(secx + 1)

Answer:  The required answer is tan x.

Step-by-step explanation:  We are given to complete the following trigonometric identity :

[tex](\_\_\_\_\_)^2=(\sec x-1)(\sec x+1).[/tex]

We will be using the following identity from trigonometry to complete the given identity :

[tex]1+\tan^2\theta=\sec^2\theta\\\\\Rightarrow \sec^2\theta-1=\tan^2\theta~~~~~~~~~~~~~~~~~~~~~~~~~(i)[/tex]

Now, we have

[tex](\sec x-1)(\sec x+1)\\\\=\sec^2x-1\\\\=\tan^2x~~~~~~~~~~[\textup{from equation (i)}]\\\\=(\tan x)^2.[/tex]

Thus, the complete identity is

[tex](\tan x)^2=(\sec x-1)(\sec x+1).[/tex]

Thus, the required answer is tan x.

The riddle 'what asks no questions but must be answered' typically refers to a telephone or a doorbell, both of which signal when someone is attempting to communicate or get attention.

The student's question, "what asks no questions but must be answered," is a type of riddle, which is a question or statement intentionally phrased to require ingenuity in ascertaining its answer. In this context, the answer to the riddle is typically the telephone or a doorbell, as both signal when someone is trying to get in contact or gain attention, and generally, one responds to them. Riddles can form part of the teaching in English, particularly when focusing on language play, word definitions, and understanding semantics. They can encourage students to pay attention to wording and to contemplate why certain expressions carry the meanings they do.

Answer:

Step-by-step explanation:

Use the distributive property a(b + c) = ab + ac:

8( -10x + 3.5y - 7)

= (8)(-10x) + (8)(3.5y) + (8)(-7)

= -80x + 28y - 42

8(-10x + 3.5y - 7)

= (4)(2)(-10x + 3.5y - 7)

= 4[(2)(-10x) + (2)(3.5y) + (2)(-7)]

= 4(-20x + 7y - 14)

The expression 8(-10x+3.5y-7) equivalent to -80x + 28y - 56.

Let the expression be

8(-10x + 3.5y - 7)

Simplifying the above equation as

[tex]$\ 8\left(-10 x+\frac{35}{10} y-7\right)$[/tex]

Multiplying the equation, then we get

[tex]$-80 x+8 \times \frac{35}{10} y-8 \times 7$[/tex]

[tex]$-80 x+4 \times \frac{35}{5} y-56$[/tex]

[tex]$-80 x+4 \times 7 y-56$[/tex]

- 80x + 28y - 56

Therefore, the correct answer is option (b) - 80x + 28y - 56.

To learn more about the expression

https://brainly.com/question/16660014

#SPJ2

2 and 2, 15tenths is the corret anwser

Answer:

Step-by-step explanation:

I think I have helped you before with this problem, substitute x and y with -3 and 8 respectively, so 5*(-3)+8b=17, -15+8b=17, 8b=32, divide both sides by 8 and you get b=4

the answer is B maybe

180- 51- 74

=55

Answer:

b

Step-by-step explanation:

The answer would be D and E

The following statements that are true: m1 + m2 + m 3 = 180 and 1 and 4 are vertical angles.

Statement A is false. Angles 2 and 3 are not adjacent to each other, so they do not form a linear pair.

Statement B is false. Supplementary angles add up to 180 degrees, but angles 1 and 4 do not add up to 180 degrees.

Statement C is true. The sum of the measures of the angles in a triangle is 180 degrees. Therefore, the sum of the measures of angles 1, 2, and 3 is 180 degrees.

Statement D is false. Angles 3 and 4 are not opposite each other, so they are not vertical angles.

Statement E is true. Vertical angles are opposite each other, and angles 1 and 4 are opposite each other. Therefore, angles 1 and 4 are vertical angles.

For such more question on angles

https://brainly.com/question/30431434

#SPJ2

Answer:

the answer is

y=(x+1)2+4

Answer:

[tex]20.11\ cm[/tex]

Step-by-step explanation:

we know that

The surface area of the cone is equal to

[tex]SA=\pi r^{2}+\pi rl[/tex]

where

r is the radius

l is the slant height

In this problem we have

[tex]SA=822.78\ cm^{2}[/tex]

[tex]r=18/2=9\ cm[/tex] -----> the radius is half the diameter

substitute and solve for l

[tex]822.78=\pi (9)^{2}+\pi (9)l[/tex]

[tex]822.78=81\pi +9\pi l[/tex]

[tex]l=(822.78-81\pi)/9\pi[/tex]

[tex]l=(822.78-81(3.14))/9(3.14)=20.11\ cm[/tex]

The slant height of the cone is approximately 20.1154 cm.

[tex]\[ \text{Surface Area} = \pi r (l + r) \][/tex]

where r is the radius of the base of the cone, and l is the slant height of the cone.

Given that the diameter of the cone is 18 cm, we can find the radius r by dividing the diameter by 2:

[tex]\[ r = \frac{diameter}{2} = \frac{18 \text{ cm}}{2} = 9 \text{ cm} \][/tex]

Now we can substitute the values we know into the surface area formula:

[tex]\[ 822.78 \text{ cm}^2 = \pi \times 9 \text{ cm} \times (l + 9 \text{ cm}) \][/tex]

To find l, we need to solve for l in the equation:

[tex]\[ 822.78 \text{ cm}^2 = 9 \pi \text{ cm} \times (l + 9 \text{ cm}) \] \[ \frac{822.78 \text{ cm}^2}{9 \pi \text{ cm}} = l + 9 \text{ cm} \] \[ \frac{822.78}{9 \pi} = l + 9 \] \[ l = \frac{822.78}{9 \pi} - 9 \][/tex]

Now we calculate the value of l:

[tex]\[ l = \frac{822.78}{9 \times \pi} - 9 \] \[ l = \frac{822.78}{28.27433388} - 9 \] \[ l \approx 29.1154 - 9 \] \[ l \approx 20.1154 \text{ cm} \][/tex]

When you don’t know the answer on a multiple choice questions, it is generally best to use the process of elimination, make an educated guess, or use prior knowledge to increase your chances of getting the right answer.

When you encounter a multiple choice question and you don't know the answer, there are a few strategies you can use to increase your chances of getting it right:

Remember, when guessing on multiple choice questions, it's important to consider the context of the question and eliminate obvious incorrect choices before making your guess.

https://brainly.com/question/1774114

#SPJ2

Answer:

130 ft^2

Step-by-step explanation:

SA= surface area

SA= 2*l*w + 2*l*h + 2*w*h

l= length = 10

w= width =5

h = height = 1

SA= 2*l*w + 2*l*h + 2*w*h

SA= 2*10*5 +2*10*1+2*5*1

SA= 100+20+10

SA= 130 ft^2

Answer:

maybe convince them for a higher pay rate

Step-by-step explanation:

Answer:

Option B. [tex]p=k/b[/tex]

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form [tex]y*x=k[/tex] or [tex]y=k/x[/tex]

Let

p-----> the number of painters

b----> the time taken to paint the building

we know that

[tex]p*b=k[/tex]

so

[tex]p=k/b[/tex]

Answer:

B. [tex]p=\frac{k}{b}[/tex]

Step-by-step explanation:

Given,

The number of painters, p, employed to paint a building is inversely proportional to the time taken to paint the building, b

[tex]\implies p\propto \frac{1}{b}[/tex]

[tex]\implies p=\frac{k}{b}[/tex]

Where, k is the constant of proportionality,

Hence, the required equation that models the relation between p and b is,

[tex]p=\frac{k}{b}[/tex]

Option 'B' is correct.

How much we need for start-up supplies . . . . . $25

AFTER start-up supplies we want to have . . . $70

Total amount we need to get started . . . (25 + 70) = $95

Number of people contributing . . . (me + 4) = 5

Amount each person needs to kick in . . . (95/5) = $19

As your preliminary Accountant, please reserve me one dozen (13) bagels from the first batch you produce !

Answer:

7,999,800

Step-by-step explanation:

8,000,000 minus 200 = answer

I'm sorry I'm not entirely sure. But I think -2 and 4. If it's not multiple choice I say -2.

Answer:   4

Step-by-step explanation:

Average rate of change is the slope between that interval

[tex]f(x) = x^2-3\\\\f(1)=1^2-3\\.\qquad =-2\\,\qquad (1, -2)\\\\f(3)=3^2-3\\.\qquad =6\\.\qquad =(3,6)\\\\slope=\dfrac{y_2-y_1}{x_2-x_1}\\\\\\slope=\dfrac{6-(-2)}{3-1}=\dfrac{8}{2}=\large \boxed{4}[/tex]

just simply count the number of letters in each number, that is to say:

NINE= 4 letters

TWENTY-ONE= 9 letters

so 16=7 since

SIXTEEN is 7 letters

and 17=9 since

SEVENTEEN is 9 letters

Answer:

The numbers are 25, 20 and 80

Step-by-step explanation:

125=a+b+c

b=a-5

c=4b

c=4(a-5)

c=4a-20

125=a+a-5+4a-20

125=6a-25

150=6a

25=a

b=a-5

b=25-5

b=20

c=4b

c=4(20)

c=80

✓:

80+20+25=125✓