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hammer [34]
3 years ago
9

HELPPP PLZZ I REALLY NEED HELP

Mathematics
2 answers:
gogolik [260]3 years ago
6 0

Answer: A.

The reason is because if you're adding a negative to a number, it's subtraction, which is in the expression.

pshichka [43]3 years ago
6 0

Answer:

The answer is A.

Step-by-step explanation:

Adding a negative is the same as subtracting

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Calculate the distance between the points P=(-1, -1) and L=(6, -9) in the coordinate plane.
Over [174]

Answer:

≈ 10.63

Step-by-step explanation:

Calculate the distance d using the distance formula

d = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2    }

with (x₁, y₁ ) = P(- 1, - 1) and (x₂, y₂ ) = L(6, - 9)

d = \sqrt{(6-(-1))^2+(-9-(-1))^2}

   = \sqrt{(6+1)^2+(-9+1)^2}

   = \sqrt{7^2+(-8)^2}

   = \sqrt{49+64}

   = \sqrt{113} ≈ 10.63 ( to the nearest hundredth )

6 0
2 years ago
A penny has a mass of 3 grams. what is the mass in grams of 8 pennies ?
lawyer [7]
Multiply
3x8
=24 Grams
8 0
3 years ago
Read 2 more answers
Let f(x)=−1/4(x+4)^2−8 . What is the average rate of change for the quadratic function from x=−2 to x = 2? Enter your answer in
kiruha [24]

Answer:

Average rate of change of function is -2.

Step-by-step explanation:

Given f(x)=\frac{-1}{4}(x+4)^2-8.

we have to find the average rate of change for the quadratic function from x=−2 to x = 2.

f(-2)=\frac{-1}{4}(-2+4)^2-8=\frac{-1}{4}(4)-8=-9

f(2)=\frac{-1}{4}(2+4)^2-8=\frac{-1}{4}(36)-8=-17

The average rate of change of the function  f(x) on interval [-2,2] is

\frac{f(b)-f(a)}{b-a}=\frac{f(2)-f(-2)}{2-(-2)}=\frac{-17-(-9)}{4}=\frac{-8}{4}=-2

3 0
3 years ago
A distribution has a mean of 16 and a standard deviation of 6. What is the Z score that corresponds with 34?
Brrunno [24]

Answer:

Z = 3

Step-by-step explanation:

In a normal distribution, the Z score that corresponds with a data point x is calculated using the formula;

Z=\frac{x-mean}{standard deviation}

For the case given, the z score will be;

Z=\frac{34-16}{6}=3

7 0
3 years ago
Jack thinks the ordered pairs below could be solutions to a linear equation,but Sally disagrees. Who is correct? Justify your an
I am Lyosha [343]

who is jack is that your crush?

6 0
3 years ago
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