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3 years ago

Do any of you know any written answers to the Probability Unit Test for 7th grade? I need a little help!

1 answer:

5 0

All tests across the world are different even if they're the same subject and stuff. I think it's easier for you to study, so if you have any questions about them please post them on Brainly!

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Plz help I need this in soon and I don't know the answer

kolbaska11 [484]

Answer:

.13

Step-by-step explanation:

We need to find the areas of the regions

Area of the shaded region

A =pi r^2

pi (5)^2

25pi

The area of the total region

A = pi r^2

A = pi 14^2

= 196 pi

P(shaded) = shaded/ total

= 25 pi/196 pi

25/196

.12755102

To the nearest hundredth

.13

6 0

3 years ago

Read 2 more answers

The square of the sum of two consecutive positive even integers is 4048 more than the sum of the squares of these two numbers. F

Rasek [7]

Answer:

44, 46

Step-by-step explanation:

The integers are both even, so if the smaller one is x, then the larger one is x+2.

Therefore:

((x) + (x+2))² = 4048 + (x)² + (x+2)²

(2x + 2)² = 4048 + x² + x² + 4x + 4

4x² + 8x + 4 = 2x² + 4x + 4052

2x² + 4x - 4048 = 0

x² + 2x - 2024 = 0

(x + 46) (x - 44) = 0

x = -4+, 44

Since x must be positive, x = 44. And x+2 = 46. So the numbers are 44 and 46.

Let's check:

(44 + 46)² = 8100

4048 + 44² + 46² = 8100

3 0

3 years ago

A tree casts a shadow 18 feet long. At the same time, a vertical rod 12 feet high casts a shadow 4 feet long. How long is the tr

Art [367]

18×3=54
12÷4=3
so multiply 18 by 3

4 0

4 years ago

PLEASE HELP{ WILL GIVE BRAINLIEST

Volgvan

Answer:

$\approx10.29\text{ feet}$

Step-by-step explanation:

Please refer to the attachment.

By AA Similarity, the two triangles are similar.

Therefore, corresponding parts of them are proportional.

Therefore, we can write the following proportion:

$\frac{7}{24}=\frac{3}{x+3}$

We will solve for x. Cross-multiply:

$7(x+3)=24(3)$

Distribute:

$7x+21=72$

Subtract 21 from both sides:

$7x=51$

Divide both sides by 7. So, the value of x is:

$x\approx7.2857$

However, that is only the value of x.

The shadow of the tree is (x+3).

Hence, we will need tot add 3 to our value. Therefore, the actual length of the shadow of the tree is approximately:

$\approx10.2857\approx10.29\text{ feet}$

7 0

3 years ago

B) Work out the value of (1.7 * 104) * (8.5 x 10-2)<br> Give your answer in standard form.

stealth61 [152]

Answer:

1.445×10*3

Step-by-step explanation:

8 0

3 years ago