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3 years ago

Jessica rides the bus 8% miles each day.how many miles does she ride in 10 days?

Mathematics

1 answer:

liq [111]3 years ago

3 0

Answer:

80 miles

Step-by-step explanation:

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HELPP If f(x)=x^(2)+3x-2, find f(-2)

Vikki [24]

Answer:

f(-2)=-12

Step-by-step explanation:

just plug in -2 for x values

and solvee

f(-2)=-2^2+3(-2)-2

should be -12

f(-2)=-12

6 0

3 years ago

Precalculus PLEASE HELP ME right answers only check all please

Alex_Xolod [135]

Given :

$cos(x)cos(\frac{\pi }{7}) + sin(x)sin(\frac{\pi }{7})=-\frac{\sqrt{2}}{2}$

We know the identity

$cos(x)cos(y) + sin(x)sin(y)=cos(x-y)$

We use this property to simplify the left hand side

So $cos(x)cos(\frac{\pi }{7}) + sin(x)sin(\frac{\pi }{7})=cos(x - \frac{\pi }{7})$

$cos(x - \frac{\pi }{7}) =-\frac{\sqrt{2}}{2})$

we know ,

when $cos(x) =-\frac{\sqrt{2}}{2})$ then

$x = \frac{3\pi }{4} , \frac{5\pi }{4}$

For $cos(x - \frac{\pi }{7}) =-\frac{\sqrt{2}}{2})$

$x - \frac{\pi }{7}= \frac{3\pi }{4} and x - \frac{\pi }{7}= \frac{5\pi }{4}$

Add $\frac{\pi }{7}$ on both sides

$x= \frac{3\pi }{4} + \frac{\pi }{7} and x= \frac{5\pi }{4} +\frac{\pi }{7}$

Finally we add 2npi for general solution

So options C and D are correct

6 0

3 years ago

Find the distance between the points (0, 10) and (–9, 1).

dimulka [17.4K]

$\\ \sf\longmapsto \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$\\ \sf\longmapsto \sqrt{(-9-0)^2+(1-10)^2}$

$\\ \sf\longmapsto \sqrt{(-9)^2+(-9)^2}$

$\\ \sf\longmapsto \sqrt{81+81}$

$\\ \sf\longmapsto \sqrt{162}$

$\\ \sf\longmapsto 12.42$

5 0

3 years ago

Is 2(2x + 3y) = 4x + 6y true or false and how do you know?

PIT_PIT [208]

Answer:

True because when you multiply the 2 by everything in the parentheses you get 4x + 6y which is 4x + 6y = 4x + 6y. and when you solve it you'll get 0 = 0

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

What is the area?<br> diameter of circle is 7 m

spayn [35]

Answer:

the area is 52.49

Step-by-step explanation:

triangle

radius is 3.5

3.5x19=66.5÷2=33.25

hemisphere

π3.5squared=38.48

38.48÷2=19.24

33.25+19.24= 52.49

8 0

3 years ago