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3 years ago

Number 3 need the answer

Mathematics

1 answer:

Pepsi [2]3 years ago

4 0

Answer:

Step-by-step explanation:

one negative* one negative = always positive

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A couple plans to have four children. Using a tree diagram , obtain the sample space. List the elements that make up the sample

blagie [28]

Correct answer is B.

There are $2^4 = 16$ points in the sample space, so choices C and D are automatically out.

Choice A is out because there is a possibility to have all 4 boys, but BBBB is not in choice A.

So the answer is choice B

4 0

3 years ago

Please need help on this math

Elis [28]

Answer: B)

Step-by-step explanation: 21, 22, 22, 24, 24, 26, 26, 28, 29, 30, 32

5 0

2 years ago

Read 2 more answers

If b

lys-0071 [83]

Answer:

$46.2^o$

Step-by-step explanation:

The correct question is

If b = 9 and c = 13, what is the measure of ∠A? (round to the nearest tenth of a degree)

The picture in the attached figure

we know that

In the right triangle ABC

$cos(A)=\frac{b}{c}$ ---> by CAH (adjacent side divided by the hypotenuse)

substitute the given values

$cos(A)=\frac{9}{13}$

using a calculator

$A=cos^{-1}(\frac{9}{13})=46.2^o$

7 0

3 years ago

Can i get help on this question x+4= -9 1/4

Bas_tet [7]

Answer:
x=-25/4
Step-by-step explanation:

First your make both sides clean,

x+4=-9/4

Then you minus 4 on both sides to balance the equation:

x+4-4=(-9/4)-4
x= -25/4

6 0

2 years ago

the graph below shows how many gallons of gas are used by a boat when it travels. how many gallons of gas would the boat use to

Sindrei [870]

The boat uses 4 gallons to travel 6 miles. Traveling 4 times as far is expected to require 4 times the gas.

4 gallons = 6 miles
Multiply by 4.
16 gallons = 24 miles

⇒ 16 gallons

3 0

3 years ago