All categories

3 years ago

Please help me with this question it’s a test and I need answers!!

Mathematics

2 answers:

PtichkaEL [24]3 years ago

5 0

Answer:

49,7²

Step-by-step explanation:

7^9*7^-6*7^-8*7^7

7^9-6-8+7

7^16-14

7^2

scoundrel [369]3 years ago

5 0

Answer:

Seven squared and 49

Step-by-step explanation:

1) you can do simple addition and subtraction with the powers:

9-6-8+7=2

2) leave the seven by itself and add the power:

7^2 (seven squared)

3) seven squared is also equal to 49

(7x7=49)

You might be interested in

I need some help plz

Dmitrij [34]

There is : 3 pencils
4 Bubble gums
2 sports cards
In each favor bag

4 0

3 years ago

Whoever checks my work and tell what I did wrong and the right answer will

gulaghasi [49]

Answer:

See below

Step-by-step explanation:

I believe that you only had to do letters F, H, and J. In that case, let's go over each one!

F: For isolating $d_{1}$ , we need to get rid of the 1/2 first. Let's multiply each side by 2:

$2*m = 2*\frac{1}{2}(d_{1}+ d_{2}) \\2m = d_{1}+ d_{2}$

After this, we just subtract $d_{2}$ from each side to get $d_{1}=2m- d_{2}$ . Dark Blue is correct! Let's now plug in those numbers below:

$d_{1}=2(10)- 13 = 20-13=7$

G: Let's isolate the vw^2 on one side by subtracting y from each side:

$vw^{2} +y-y=x-y\\vw^{2}=x-y$

Let's now divide each side by v, then put each side under a square root to get our final answer:

$\frac{vw^2}{v} = \frac{x-y}{v}\\ w^2 = \frac{x-y}{v}\\\sqrt{w^2} = \sqrt{\frac{x-y}{v}} \\w=\sqrt{\frac{x-y}{v}}$

Orange is correct! Again, let's solve the problem underneath:

w= $w=\sqrt{\frac{38-(-7)}{5}} = \sqrt{\frac{38+7}{5}} = \sqrt{\frac{45}{5}}=\sqrt{9}=3$

H: This one has some stuff that we haven't worked with quite yet (like terms), but our approach is the same: isolate c on one side of the equation.

$2a-2a+3c=17a-2a+21\\3c = 15a+21\\\frac{3c}{3} = \frac{15a+21}{3}\\c = \frac{15a}{3}+ \frac{21}{3} \\c = 5a+7$

Purple is correct! Let's solve the problem:

$c = 5(\frac{16}{5})+7 = 16+7 = 23$

7 0

3 years ago

Write <, >, or = to make the statement true : .293 ___ .29

JulsSmile [24]

If you add a zero to the end of .29 it becomes .290
So, the answer is .293 > .29

7 0

3 years ago

G) (-6t + 2z) - (7z - 7t)

vodomira [7]

Answer:

-13t - 5z

Step-by-step explanation:

-6t + 2z - 7z - 7t

= -13t - 5z

3 0

3 years ago

Two functions, f and g, are represented by these function machines.

Gennadij [26K]

Answer:

x = -2

Step-by-step explanation:

Since we know they will have the same output, we can set them equal to each other in an equation. We'll use x to represent the input.

3x + 6 = 8(x + 2) (Given)

3x + 6 = 8x + 16 (Distributed the 8)

6 = 5x + 16 (Subtracted 3x on both sides)

-10 = 5x (Subtracted 16 on both sides)

-2 = x (Divided 5 on both sides)

7 0

3 years ago