All categories

3 years ago

What I the answer to all 3

Mathematics

1 answer:

kow [346]3 years ago

7 0

Answer:

D: 15.75

A: -14.84

C: x = 11

Step-by-step explanation:

Two negatives make a positive, do 7.2 + 8.55 and you will get 15.75. If it's easier, do -10.5 + -4.34 to get -14.84. For number three you have to distribute 1/2 to x and 1 to get 0.5x + 0.5 = -5. Subtract -0.5 on both sides to get 0.5x = 5.5. Divide 0.5 from both sides to get 11.

You might be interested in

I will give the brainiest answer

Amanda [17]

Answer:

6.2857142857 or 6.29 is the circumference of the circle

6 0

3 years ago

Read 2 more answers

Find the geometric mean of the pair of numbers 175 and 7

Ber [7]

<span>What is the geometric mean for the numbers 175 and 7?

175/x = x/7

x^2 = 7*175
x = 35</span>

6 0

4 years ago

Read 2 more answers

8. WRITE Math Explain how to determine if a given rate is also a unit rate.<br> This is hard help :c

patriot [66]

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. If you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

5 0

3 years ago

Show all work and reasoning

Natalija [7]

Split up the interval [2, 5] into $n$ equally spaced subintervals, then consider the value of $f(x)$ at the right endpoint of each subinterval.

The length of the interval is $5-2=3$ , so the length of each subinterval would be $\dfrac3n$ . This means the first rectangle's height would be taken to be $x^2$ when $x=2+\dfrac3n$ , so that the height is $\left(2+\dfrac3n\right)^2$ , and its base would have length $\dfrac{3k}n$ . So the area under $x^2$ over the first subinterval is $\left(2+\dfrac3n\right)^2\dfrac3n$ .

Continuing in this fashion, the area under $x^2$ over the $k$ th subinterval is approximated by $\left(2+\dfrac{3k}n\right)^2\dfrac{3k}n$ , and so the Riemann approximation to the definite integral is

$\displaystyle\sum_{k=1}^n\left(2+\frac{3k}n\right)^2\frac{3k}n$

and its value is given exactly by taking $n\to\infty$ . So the answer is D (and the value of the integral is exactly 39).

8 0

4 years ago

A method of estimating the number of people participating in a march is to assign someone to a spot on the sidewalk with the job

tatuchka [14]

Answer:

12500

Step-by-step explanation:

4 0

3 years ago