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3 years ago

PLEASE HELP WITH THIS MATH PROBLEM

Mathematics

1 answer:

Yuki888 [10]3 years ago

4 0

Answer:

-2x<4

Step-by-step explanation:

using the x-values- look for where it starts going up (from left to right) (-2) to the point where it turns back downward (4)

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Help please<br><br> 2 (2b + 8)<br><br> b = 2

Bess [88]

Answer:

Step-by-step explanation:

2(2x2+8)

2(4+8)

2(12)

7 0

3 years ago

A car is driving away from a crosswalk. The formula d = t2 + 2t expresses the car's distance from the crosswalk in feet, d, in t

alukav5142 [94]

Answer:

8 feet per second.

Step-by-step explanation:

We have been given that a car is driving away from a crosswalk. The formula $d=t^2+2t$ expresses the car's distance from the crosswalk in feet, d, in terms of the number of seconds, t, since the car started moving.

We will use average change formula to solve our given problem.

$\text{Average change}=\frac{f(b)-f(a)}{b-a}$

$\text{Average change}=\frac{d(5)-d(1)}{5-1}$

$\text{Average change}=\frac{(5)^2+2(5)-((1)^2+2(1))}{4}$

$\text{Average change}=\frac{25+10-(1+2)}{4}$

$\text{Average change}=\frac{35-3}{4}\\\\\text{Average change}=\frac{32}{4}\\\\\text{Average change}=8$

Therefore, the the car's average speed over the given interval of time would be 8 feet per second.

8 0

3 years ago

a circular fountain has a radius of 9.4 feet. find its diameter and circumference to the nearest tenth.

pickupchik [31]

Radius = r

Diameter : D = r*2

Circumference : C = 2πr

π = 3.14 rounded

9.4*2 =18.8

2(3.14)9.4

6.28*9.4= 59.03200

Diameter = 18.8

Circumference = 59.03200

7 0

3 years ago

Mara found the length of time of an investment. The principal of the investment was $4,300, the interest rate was 6.2 percent, a

Ivanshal [37]

The error that Maria made is that she did not divide correctly.

<h3>What error did Maria make?
</h3>

The simple interest that is paid on an amount of money is a function of the amount deposited, time and interest rate.

Simple interest = principal x time x interest rate

2666 = 4300 x 0.062 x t

2666 = 266.60t

t = 2666 / 266.60

t = 10 years

To learn more about simple interest, please check: brainly.com/question/27328409

#SPJ1

3 0

2 years ago

R=2/3t +v...solve for t...thanks

mote1985 [20]

$\dfrac{2}{3}t+v=r\ \ \ |subtract\ v\ from\ both\ sides\\\\\dfrac{2}{3}t=r-v\ \ \ \ |multiply\ both\ sides\ by\ \dfrac{3}{2}\\\\\boxed{t=\frac{3}{2}(r-v)}$

4 0

3 years ago

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PLEASE HELP WITH THIS MATH PROBLEM​

PLEASE HELP WITH THIS MATH PROBLEM