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2 years ago

7

Stefan did 1 push-up on Sunday, 2 push-ups on Monday, 4 push-ups on Tuesday, 8 push-ups on Wednesday, and 16 push-ups on Thursda

y. If this pattern continues, how many push-ups will Stefan do on Friday?

1 answer:

statuscvo [17]2 years ago

4 0

Answer:

32

Step-by-step explanation:

taste of change is by a factor of 2. it was 16 on Thursday. so 16x2 = 32

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True or false all points in quadrant 2 has a negative (x) value

ladessa [460]

Answer:

False, quadrant two has both negative and positive values.

Hope I helped. Good luck on the assignment!

Step-by-step explanation:

4 0

3 years ago

What is the perimeter of each figure?<br> 2x<br> 2x<br> X-8<br> x + 2<br> 1

____ [38]

Answer:

triangle: 5x-8

square: 4x+8

Step-by-step explanation:

triangle: 2x + 2x + x -8

combine like terms

= 5x-8

square: x + 2 + x + 2 + x + 2 + x +2

combine like terms

= 4x + 8

8 0

2 years ago

2x - 3y = -4 if x + 3y = 7

Anvisha [2.4K]

(2x-3y=-4)-2(x+3y=7)

2x-3y-2x-6y=-4-14

-9y=-18

y=2, making x+3y=7 become:

x+6=7

x=1

So the solution to the system of equations is the point (1,2)

4 0

2 years ago

Read 2 more answers

Which of the following values is closest to the variance for the set of data shown below? 23, 32, 20, 43, 41, 66, 63, 59, 54, 36

Jobisdone [24]

Sorry if I'm wrong but I think the answer is B

5 0

3 years ago

What is the value of the expression (-8/9) divided by (-2/3) x (-4 1/2) ?

Law Incorporation [45]

Answer:

B) $x=-\frac{8}{27}$

Step-by-step explanation:

$-\frac{8}{9}=-\frac{2}{3}x(-4\frac{1}{2})$

To start things off, lets convert any <em>mixed numbers</em> like $-4\frac{1}{2}$ into <em>improper fractions</em>. In this case $-4\frac{1}{2}$ as an improper fraction is $-\frac{9}{2}$ .

$-\frac{8}{9}=-\frac{2}{3}x(-\frac{9}{2})$

Now let's multiply $-\frac{2}{3}x$ by $-\frac{9}{2}$ . When multiplying fractions, all you need to do is multiply the numerators and denominators separately. Your final answer should be $\frac{18}{6}x$ .
*Note: a <em>negative </em>times a <em>negative </em>is a <em>positive</em>, so that's why we now have an even number in front of $x$ instead of a negative number.

$-\frac{8}{9}=\frac{18}{6}x$

Now we want to isolate $x$ , so we'll have to divide $-\frac{8}{9}$ by $\frac{18}{6}$ , but dividing these two fractions seems like a pain. To make things a bit easier, let's turn our improper fraction into a whole number. To change this improper fraction into a whole number, we should ask ourselves what times $6$ is equal to $18$ ? In this case, the answer is 3, so $\frac{18}{6}$ is actually the same thing as the whole number $3$ .
*Note: In general, keeping fractions as either improper fractions or whole numbers will make doing math easier. Avoid mixed numbers like $-4\frac{1}{2}$ when trying to do math and simply change improper fractions into mixed numbers once you have your final solution.

$-\frac{8}{9}=3x$

Now divide $-\frac{8}{9}$ by $3$ . Think of it as multiplying the denominator of $-\frac{8}{9}$ by $3$ .

$-\frac{8}{27}=x$

6 0

3 years ago