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Gennadij [26K]
3 years ago
14

my teacher has 30 red apples and 40 green apples is she adds all of them together how many will she have

Mathematics
2 answers:
maksim [4K]3 years ago
7 0
She will have 70 green apples
aleksley [76]3 years ago
4 0
Your teacher will have 70 apples. Think of it like this: 4+3= 7, and then you add on a zero, since we switched the place value.
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If the original quantity is 15 and the new quantity is 19, estimate the percent change.
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15 to 19 was about a 27% in increase

3 0
2 years ago
Identify the exact value of 157.5°
steposvetlana [31]
<span>exact value of sin 157.5 without using a calculator
sin(157.5)=sin(315/2)
Identity: sin(x/2)=±√[(1-cosx)/2]
select positive identity since 175 is in the 2nd quadrant where sin>0
sin(315/2)=√[(1-cos315)/2]

cos 315=cos45 in quadrant IV=√2/2
sin(315/2)=√[(1-√2/2)/2]=√[(2-√2)/4]=√(2-√2)/2
sin(157.5)=√(2-√2)/2
check using calculator:
sin157.5º≈0.382...
√(2-√2)/2≈0.382...</span>
8 0
3 years ago
10 to the power of 2 +10 to the powers of three
yulyashka [42]
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4 0
3 years ago
Read 2 more answers
A rectangle has a length that is 5 inches greater than its width, and its area is 104 square inches. The equation (x + 5)x = 104
Art [367]

Answer:

The answer is 8.

Step-by-step explanation:

We need to use the quadratic formula, that is ax2+bx+c=0

Where

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For the given equation x2+5x-104=0 we have

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The first one, by being negative does not have physical sense (there are no negatives quantities when you measure the length of something)

So we use the anwser x=8

7 0
3 years ago
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Answer:

b

Step-by-step explanation:

6 0
3 years ago
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