Is x+x+x+x=4x true or false

Answer:

49

Step-by-step explanation:

7 times 7 is 49.

standard form of 7 squared is [tex]7^{2}[/tex].

Standard form is a way of writing a number, so it is easier to read. It is often used for very large or very small numbers. We use exponents to represent such numbers in standard form.

7 squared is written in the standard form as,

[tex]7^{2}[/tex] , where 7 is base and 2 is the exponent.

Learn more about standard form here:

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Answer:

  B.  (-4, -8)

Step-by-step explanation:

Put -4 into the first equation where x is, then evaluate. You will find ...

  y = (1/2)(-4) -6 = -2 -6 = -8

Then the point that satisfies both equations is ...

  (x, y) = (-4, -8) . . . . matches choice B

___

You can eliminate choices A and D, because they don't have -4 for the x-value.

Answer:

B

Step-by-step explanation:

First, find the y-intercept form of the equation:

x - y = 4

x - x - y = 4 - x

-y = 4 - x

-y = -x + 4

-y/-1 = -x/-1 + 4/-1 (to get the y positive)

y = x - 4

The y-intercept is -4. This means that a y-intercept two units above 4 would be -2. Whichever line crosses the y axis at the value of -2 is the answer (line B)

hope this helps :)

Step-by-step explanation:

5 - n/2 = 12

10/2 - n/2 = 12

n = (12 × (-2)) + 10

n = (-24) + 10

n = -14

Let's prove it :

[tex]5 - ( - \frac{14}{2} ) \\ = \frac{10}{2} + \frac{14}{2} \\ = \frac{24}{2} \\ = 12[/tex]

Conclusion :

5 - n/2 = 12

5 - (-14/2) = 12

and

n = -14

Answer:

Fraction- 44/100 or 11/25

decimal- 0.44

Percent- 44%

The mean of the discounted prices is $736.25, the median is $810, the mode is $810, and the range is $645.

To find the mean of the discounted prices, we add up all the prices and divide by the total number of prices. In this case, the mean is $736.25 because (640 + 810 + 755 + 810 + 1175 + 900 + 1080 + 530) / 8 = 736.25.

To find the median of the discounted prices, we arrange the prices in ascending order and find the middle value. Since there are 8 prices, the median is the average of the 4th and 5th values, which are $810 and $810, respectively. So, the median is $810.

To find the mode of the discounted prices, we look for the value that appears most frequently. In this case, $810 appears twice, which is more often than any other price. Therefore, the mode is $810.

To find the range of the discounted prices, we subtract the smallest price from the largest price. In this case, the range is $645 because $1175 - $530 = $645.

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Answer:

10 miles

Step-by-step explanation:

Use pythagorean theorem:

[tex]6^{2} +8^{2} = 10^{2}[/tex]

Answer:

hard

Step-by-step explanation:

Answer:

The answer would be the B . I assume your talking about a number line.

Step-by-step explanation:

Answer:

○  is your answer

Step-by-step explanation:

brainliest please

Answer:

$75

Step-by-step explanation:

Answer:75

Step-by-step explanation:

Answer:

73

Step-by-step explanation:

When you have a line intersecting another line, the angles produced by the intersection will be equal to 180.

This means that  (-39 + x) + 146 = 180.  Solve for x.

(-39 + x) + 146 = 180

-39 + x = 34

x = 73

Answer:

C. 16

Step-by-step explanation:

12÷2×3−(7−5) = 16.

I hope this helps!

Following the order of operations (PEMDAS/BODMAS), the expression simplifies as:- 12 ÷ 2 * 3 - (7 - 5) = 6 * 3 - 2 = 18 - 2 = 16. So, the value is 16.

To find the value of the expression 12 ÷ 2 * 3 - (7 - 5), we need to follow the order of operations, often remembered using the acronym PEMDAS (or BODMAS):

1. Parentheses (or Brackets): First, we evaluate what's inside the parentheses. In this case, (7 - 5) equals 2.

2. Exponents (or Orders): There are no exponents or orders in this expression.

3. Multiplication and Division: After dealing with parentheses, we move from left to right. So, 12 ÷ 2 * 3 is calculated as follows:

  12 ÷ 2 * 3 = 6 * 3 = 18

4. Addition and Subtraction: Again, we move from left to right. Now we subtract 2 (the result from step 1) from 18 (the result from step 3):

  18 - 2 = 16

So, the final answer is 16.

In summary, using the order of operations, the expression simplifies to 16. It's crucial to follow these rules to ensure that mathematical expressions are evaluated correctly, as different orders can lead to different results.

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Answer:

5 and –8 are solutions.

Step-by-step explanation:

8 is a solution to the original equation. The value –5 is an extraneous solution.

5 and 8 are both extraneous solutions.

5 is a solution to the original equation. The value –8 is an extraneous solution.

Answer: 5 and –8 are solutions

Step-by-step explanation:

Answer:

- (19/3)

Step-by-step explanation:

-3-5-6g=11-3g

-8-6g=11-3g

-3g=19

g= - (19/3)

Answer:

B. 6.3%

Step-by-step explanation:

For each time that the coin is tosse, there are only two possible outcomes. Either it comes up tails, or it does not. The probability of coming up tails on a toss is independent of any other toss. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

Fair coin:

Equally as likely to come up heads or tails, so [tex]p = 0.5[/tex]

Probability that the first tails comes up on the 4th flip of the coin?

0 tails during the first three, which is P(X = 0) when n = 3.

Tails in the fourth, with probability 0.5. So

[tex]p = 0.5P(X = 0)[/tex]

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]p = 0.5P(X = 0) = 0.5*(C_{3,0}.(0.5)^{0}.(0.5)^{3}) = 0.0625[/tex]

0.0625 * 100 = 6.25%

Rounding to the nearest tenth of a percent, the correct answer is:

B. 6.3%

Answer: C 1.6 APE.X approved

Answer:

∠2 = 152

Step-by-step explanation:

A straight angle should always equal 180, and that is really the key to how we answer this problem. That means that ∠1 and ∠2 are supplementary, and add up to 180°.

That means that 180-28, will give us our other angle.

Answer:

152°

Step-by-step explanation:

Angles on a straight line add up to 180°

Angle 2 + 28 = 180

Angle 2 = 180 - 28

= 152°

Answer:

2nd one is the correct answer

Step-by-step explanation:

[tex] { \tan}^{2} ( \theta) + 1 = { \sec}^{2} ( \theta) \\ [/tex]

Answer:

b

Step-by-step explanation:

Answer:

20 +200

Step-by-step explanation:

Answer:

200 + 20h = x

could be wrong so sorry

We have been given 4 choices. We are asked to choose the volume that could belong to a cube with a side length that is an integer.

We know that volume of a cube is cube of each side length.

To solve our given problem, we will take cube root of each given value. The cube root of which value will be an integer that will be our correct choice.

A. [tex]s^3=18[/tex]

[tex]\sqrt[3]{s^3}=\sqrt[3]{18}[/tex]

[tex]s=2.62074[/tex]

Since cube root of 18 is not an integer, therefore, 18 is not a correct choice.

B. [tex]s^3=36[/tex]

[tex]\sqrt[3]{s^3}=\sqrt[3]{36}[/tex]

[tex]s=3.301927[/tex]

Since cube root of 36 is not an integer, therefore, 36 is not a correct choice.

C. [tex]s^3=64[/tex]

[tex]\sqrt[3]{s^3}=\sqrt[3]{64}[/tex]

[tex]s=4[/tex]

Since cube root of 64 is 4 and 4 is an integer, therefore, 64 is the correct choice.

D. [tex]s^3=100[/tex]

[tex]\sqrt[3]{s^3}=\sqrt[3]{100}[/tex]

[tex]s=4.641588[/tex]

Since cube root of 100 is not an integer, therefore, 100 is not a correct choice.

Answer:

c

Step-by-step explanation:

have a nice day :)

Answer:

Angle CAB=56 degrees

Step-by-step explanation:

See the attached image for the diagram.

In triangle BMC

|BM|=|MC| (Radii of a Circle)

Therefore, triangle BMC is an Isosceles Triangle; and

[tex]\angle CBM=\angle BCM=34^\circ[/tex]

[tex]\angle CBM+\angle BCM+\angle BMC=180^\circ$ (sum of \angle s$ in a triangle)\\34^\circ+34^\circ+\angle BMC=180^\circ\\\angle BMC=180^\circ-68^\circ=112^\circ[/tex]

Next,

[tex]\angle BMC=2\angle CAB $(Angle at center is twice angle at circumference)\\112^\circ=2\angle CAB\\\angle CAB=112^\circ \div 2\\\angle CAB=56^\circ[/tex]

Answer:

The answer is Angle CAB=56 degrees

Step-by-step explanation:

Answer: CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

Step-by-step explanation: HOPE IT HELPS YOU

Answer:

(0,0)

Step-by-step explanation:

Answer:

(0,0)

Step-by-step explanation:

The graph is not shifted to the right, left, up, or down, so the vertex is still the origin. Even though the equation is negative, all this means is it is reflected across the x-axis. So, the vertex is still at the origin.

Answer:

1680 ways.

Step-by-step explanation:

This question is solved using Permutation formula.

Permutation formula is given as

nPr = n! / (n -r)!

In the above question we are to find how many ways we can answer 8 multiple choice questions with 4 options(A, B,C,D)

Therefore,

n = 8 multiple choice questions

r = 4 options

nPr = n! / (n - r)!

8P4 = 8! / ( 8 - 4) !

8P4 = 8! / 4!

8P4 = (8 × 7 × 6 × 5 × 4 × 3 × 2 × 1) / (4 × 3 × 2 × 1)

8P4 = 40320 / 24

8P4 = 1680 ways

Therefore, the number of ways to answer 8 multiple choice questions with 4 options (A, B, C, D) for each is 1680 ways.

Answer:

65,536 ways.

Step-by-step explanation:

The Fundamental Counting Principle states that:

"If decision M can be made m ways and decision N can be made n ways, then the two decisions can be made m⋅n ways"

Therefore, we can create a model of the eight questions by drawing eight blanks:

_ _ _ _ _ _ _ _

Then, filling in each "question" with the number of options for each, which is four:

4 4 4 4 4 4 4 4

And finally, we can multiply the fours together, which would be 4⋅4⋅4⋅4⋅4⋅4⋅4⋅4 or 4⁸, which is equal to 65,536.

I hope this helps! :D

Answer:

The calculated value is "0.214"

Step-by-step explanation:

Given expression :

[tex]\bold {\frac{-2}{3}+ 1 -\frac{3}{\frac{2.8}{9}} }\\[/tex]

solution:

[tex]\Rightarrow \frac{-2}{3}+ 1 -\frac{3}{\frac{2.8}{9}}\\\\\Rightarrow \frac{-2}{3}+ 1 -\frac{3}{\frac{2.8}{\frac{9}{1}}}\\\\\Rightarrow \frac{-2}{3}+ 1 -\frac{3}{2.8} \times \frac{1}{9}}}\\\\\Rightarrow \frac{-2}{3}+ 1 -\frac{1}{8.4}\\\\\Rightarrow \frac{-16.8 + 25.2- 3}{25.2}\\\\\Rightarrow \frac{5.4}{25.2}\\\\\Rightarrow 0.214[/tex]

Answer:

-7

Step-by-step explanation:

The two lines intersect at the point (6,10), so this point belongs to both lines. This means that if we use the value of x = 6 in the lines, we will find y = 10

So we can use this point to find the values of b and m:

y = mx + 4

10 = 6m + 4

6m = 6

m = 1

y = 3x + b

10 = 3*6 + b

b = 10 - 18 = -8

So the value of b + m is -8 + 1 = -7

After substituting the intersection point (6, 10) into both line equations and solving for m and b respectively, we find that the value of b + m is -7.

To find the value of b + m when two lines intersect at the point (6, 10), we can substitute the coordinates of the intersection point into both line equations. Since the coordinates (6, 10) must satisfy both equations, we have:

For the first equation y = mx + 4:
10 = m*6 + 4,
which simplifies to:
m = 1.

For the second equation y = 3x + b:
10 = 3*6 + b,
which simplifies to:
b = -8.

Having both values, we can now calculate b + m:
b + m = (-8) + 1 = -7.

The value of b + m is -7, which represents the sum of the y-intercept of the second line and the slope of the first line.

Answer:

x>7

Step-by-step explanation:

We do 2 steps

2x > x + 7

that means

2x - x > x - x + 7

then

x > 7

That is the answer. Hope it useful for you!

Answer:

greg is riding his bike fast

Step-by-step explanation:

Answer:

Step-by-step explanation:  im going to break down that is all 30 miles 10 miles per hours so it takes ''3 ''hours to reach the top  so it took 4 houser for him to  travel all his way lol so he rid  30 miles so thair

dont give me brainiest