All categories

3 years ago

45 plus what equals 90

Mathematics

1 answer:

Elanso [62]3 years ago

4 0

Answer:

Step-by-step explanation:

45 +45=90

You might be interested in

7+2x/3 =5 what’s the answer

Jobisdone [24]

<h3>Answer:</h3>

<h3>Step-by-step explanation:</h3>

$\sf \frac{7 + 2x}{3} = 5$

$\sf = 7 + 2x = (5 \times 3)$

$\sf = 7 + 2x = 15$

$\sf = 2x = 15 - 7$

$\sf = 2x = 8$

$\sf = \: \: \: x = 8 \div 2 \\ \sf x = 4$

3 0

2 years ago

Read 2 more answers

Help!!! will give brainly if u help me! btw photo is attached

OLEGan [10]

Answer:

Acute isosceles triangle!

Step-by-step explanation:

Hope this helps! :]

7 0

3 years ago

Pete is a politician. He claims that 32% of the households in his district have total household incomes below the poverty level.

victus00 [196]

Answer:

$z=\frac{0.3867 -0.32}{\sqrt{\frac{0.32(1-0.32)}{225}}}=2.145$

For a bilateral test the p value would be:

$p_v =2*P(z>2.145)=0.0320$

Step-by-step explanation:

Information given

n=225 represent the sample selected

X=87 represent the households with incomes below the poverty level

$\hat p=\frac{87}{225}=0.3867$ estimated proportion of households with incomes below the poverty level

$p_o=0.32$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

System of hypothesis

We want to check if the true proportion is equal to 0.32 or not.:

Null hypothesis: $p=0.32$

Alternative hypothesis: $p \neq 0.32$

The statistic is given bY:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing we got:

$z=\frac{0.3867 -0.32}{\sqrt{\frac{0.32(1-0.32)}{225}}}=2.145$

For a bilateral test the p value would be:

$p_v =2*P(z>2.145)=0.0320$

4 0

4 years ago

You buy 1 1/4 yards of fabric and an $8 clothing pattern. Your total cost with a 6% sales tax added is $18.55. What is the cost

Paraphin [41]

First we can divide it by 106 then multiply it by 100 to get rid of the 6% sales tax, which now the cost of the stuff is $17.50.
Next, we subtract 8 from this to represent the clothing pattern cost. Now it is $9.50.
The last stap to this is to divide it by 1 1/4 to get the final cost per yard:
The fabric costs $7.60 per yard. Hope this helps!

8 0

3 years ago

In the equation, 1/4n+5=51/2 what is n equal to?

BlackZzzverrR [31]

Answer:

N = 2

Step-by-step explanation:

5 1/2 - 5

= 1/2

1/2 divided by 1/4 = 2

N = 2

5 0

4 years ago

Read 2 more answers