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3 years ago

If the temperature was -4 yesterday and 23 today what is the change in temperature

Mathematics

2 answers:

Bess [88]3 years ago

7 0

27 degrees add four then 23 and you get 27

Anika [276]3 years ago

5 0

19 is the answer because is -4 plus 23 to find the answer hopefully that will help

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"A number is greater than or equal to -3"

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Answer:

$x \geqslant - 3$

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3 years ago

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What is the square root of 45 rounded to the nearest hundredth

lakkis [162]

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Which equation is the inverse of 2(x - 2)2 = 8(7 + y)?

Marina86 [1]

Answer:

The inverse of $2(x - 2)^2 = 8(7 + y)$ is $y=\sqrt{(4x+28)}+2$

Step-by-step explanation:

Given equation : $2(x - 2)^2 = 8(7 + y)$

$\Rightarrow \frac{2(x-2)^2}{8}=7+y\\\Rightarrow \frac{2(x-2)^2}{8}-7=y$

Replace x with y and y with x

So, $\Rightarrow \frac{2(y-2)^2}{8}-7=x\\\Rightarrow \frac{2(y-2)^2}{8}=x+7\\\Rightarrow 2(y-2)^2=8(x+7)\\\Rightarrow (y-2)^2=4(x+7)\\\Rightarrow (y-2)=\sqrt{4(x+7)}\\\Rightarrow y=\sqrt{4(x+7)}+2\\\Rightarrow y=\sqrt{4x+28)}+2$

So, Option C is correct

Hence The inverse of $2(x - 2)^2 = 8(7 + y)$ is $y=\sqrt{(4x+28)}+2$

4 0

3 years ago

I think of a number multiply by two then subtract 9

EastWind [94]

Answer:

2n - 9

Step-by-step explanation:

Let the number be n. Then "a number multiply by two then subtract 9" yields

2n - 9

3 0

3 years ago

For the function f(x) = x + 9, find (f o f-1)(5) A. 14 B. 5 C. -5 D. 25

Alex Ar [27]

F-1:
y=x+9
y-9=x
x-9=f-1
f-1(14)=14-9=5 f-1(5)=5-9=-4 f-1(-5)=-5-9=-14 f-1(25)=25-9=16
f(14)=14+9=24 f(5)=5+9=14 f(-5)=9-5=4 f(25)=25+9=34

5 0

3 years ago