All categories

3 years ago

Can you help me solve 13 please 100 points

Mathematics

2 answers:

Lera25 [3.4K]3 years ago

5 0

Answer:

Option A, 70

Step-by-step explanation:

Step 1: Find the Science grade

(95 + 85 + 90 + 80 + x) / 5 = 84

Step 2: Multiply both sides by 5

(95 + 85 + 90 + 80 + x) / 5 * 5 = 84 * 5

95 + 85 + 90 + 80 + x = 420

Step 3: Combine all of the numbers

95 + 85 + 90 + 80 + x = 420

350 + x = 420

Step 4: Subtract 350 from both sides

350 + x - 350 = 420 - 350

x = 70

Answer: Option A, 70

hoa [83]3 years ago

4 0

Answer: A. 70

Step-by-step explanation:

95 + 90 + 85 + 80 + 70 = 420, then divide that by 5 equals 84

You might be interested in

Here ya goes brotherrrrrrrrrrrrrr

WARRIOR [948]

Answer:

I believe the answer is B

6 0

3 years ago

Read 2 more answers

What is the value of t?

solmaris [256]

Answer:

A) t = -3

Step-by-step explanation:

We have the expression $\frac{(t-12)}{2}=\frac{3t}{2}-3$ and we have to find the value of t.

First we are going to reorder the expression:

$\frac{(t-12)}{2}=\frac{3t}{2}-3\\\\3=\frac{3t}{2}-\frac{(t-12)}{2}\\\\3=\frac{3t-t-(-12)}{2}\\\\3=\frac{2t+12}{2}$

Now we have to multiply each side by 2,

$3=\frac{2t+12}{2}\\\\3.2=\frac{2t+12}{2}.2\\\\6=2t+12$

Subtract (-12) in both sides,

$6=2t+12\\6-12=2t+12-12\\-6=2t$

Divide both sides in 2,

$-6=2t\\\frac{-6}{2} =\frac{2t}{2} \\-3=t$

The answer is option A) t = -3.

6 0

3 years ago

Ara has a cube with side lengths of 4.2 cm. Which is the best estimate of the volume of the cube?

garik1379 [7]

4.2³ = 74.088. If the 4.2 is accurate, this is actually not an estimate but an exact answer. You can of course round it to 74, then it becomes an estimate.

6 0

2 years ago

Explain in at least 5 sentences why scientific notation is important. You can choose a job or company that would use it and give

Lana71 [14]

Answer:

UwU

Step-by-step explanation:

UwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwUUwU

8 0

3 years ago

Divide to Find Equivalent Ratios

Brilliant_brown [7]

Answer:

4 are equivalent to 3 feet with 6 feet 72 inches.

Step-by-step explanation:

I'm in war and need brainiest to win plzzz you wont regret .

4 0

2 years ago