3 years ago

Find the sum of 7.7, 0.94, and 13

Mathematics

1 answer:

poizon [28]3 years ago

5 0

Answer:

21.64

Step-by-step explanation:

7.7+0.94+13=21.64

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Which is the correct answer?

Montano1993 [528]

Answer:

I'm not sure but I think it is letter A

Step-by-step explanation:

Because first off 0 is divisible by any integer number meaning it has to be divide by a whole number not fraction. Also, 0 + 2 = 2 then you divide that by 4 is 0.5.

6 0

3 years ago

Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side the area of the smaller

horsena [70]

Answer: 20 feet by 20 feet.

Step-by-step explanation:

1. You know that $x$ is the original measure of one side. Since it is a square, all its sides are equal.

2. Therefore, to solve the problem you only need to solve for $x$ , as you can see below:

- You have that:

$(a-b)^{2}=a^{2}-2ab+b^{2}$

- Then, you obtain the following quadratic equation:

$(x-8)^{2} =144\\x^{2}-2(x)(8)+8^{2}=144\\x^{2}-16x-80=0$

- Apply the Quadratic formula to solve it:

$x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}\\a=1\\b=-16\\c=-80$

- Then, you obtain:

$x_1=20\\x_2=-4$

3. The dimensions cannot be negative, therefore, the answer is: 20 feet by 20 feet.

3 0

3 years ago

Read 2 more answers

Is this relationship linear, exponential, or neither.<br><br> x -12 -6 0 6<br> y 9 12 20 40

Diano4ka-milaya [45]

Answer:

This appears to be exponential based on the plot of these points

Step-by-step explanation:

See image

5 0

2 years ago

Find the average rate of change of the function below over the interval (-4,-1).

babymother [125]

Answer:

-2

Step-by-step explanation:

$\frac{f(b)-f(a)}{b-a}\\ \\=\frac{f(-1)-f(-4)}{-1-(-4)}\\ \\=\frac{-4-2}{-1+4}\\ \\=\frac{-6}{3}\\ \\=-2$

Therefore, the average rate of change over the interval [-4,-1] is -2.

5 0

2 years ago

Millie had $450 in a savings account. She spent $171 on new luggage. What percent of Millie's money is left in her savings accou

Rudiy27

Amount left = $450 - $171 = $279

Amount left in Percentage = 279/450 x 100 = 62%

Answer: (C) 62%

4 0

3 years ago