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3 years ago

Please help me with this question

Mathematics

1 answer:

kramer3 years ago

4 0

Answer:

1. 1 1/2 feet

2. 0.46

3a. 0.62 I'm not sure if this one's correct, it's worded weird

3b. -3.43

3c. 0.14

3d. -0.481

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TO A TITY. 10. 5x + 2) > 13

grin007 [14]

5x - 2 = 13
5x = 13 + 2
5x = 15 (divide both sides by 5 to get x)
5x/5 = 15/5
x = 3

7 0

3 years ago

For a quadratic function ƒ(x)=ax2+bx+c, ƒ(−1)<1, ƒ(1)>−1, and ƒ(3)<−4. What could be the sign of a?

denis23 [38]

Answer:

"a" must be negative

Step-by-step explanation:

The slope between points (-1, 1) and (1, -1) is a minimum of (-1-1)/(1-(-1)) = -1.

The slope between points (1, -1 and (3, -4) is a maximum of (-4-(-1))/(3-1) = -3/2.

Thus, as x increases, the slope is decreasing. In order for that to be the case, the value of a must satisfy a < 0.

4 0

4 years ago

X + 5y = 8 -x + 2y = -1 How is this solved?

Oksi-84 [34.3K]

Add both the equations together to eliminate x

x+5y=8
-x+2y=-1

7y=7
y=1

Now fill in y into the original equation

x+5(1)=8
x+5=8
x=3

Now you can check by filling x and y into the second equation.

-(3)+2(1)=-1
-3+2=-1
-1=-1

So your answer will be (3, 1)

Brainliest my answer if it helps you out?

8 0

3 years ago

The equation of a line with slope m= - 1/4 and including point (-3, 5) is y= - 1/4 x - 4.

raketka [301]

Answer:

False

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

here m = - $\frac{1}{4}$ , hence

y = - $\frac{1}{4}$ x + c ← is the partial equation

to find c substitute (- 3, 5) into the partial equation

5 = $\frac{3}{4}$ + c ⇒ c = $\frac{17}{4}$

y = - $\frac{1}{4}$ x + $\frac{17}{4}$ ← equation of line

8 0

3 years ago

Your friend asked you to bring a couple of bags of chips to his party. there are several brands of chips,each a different size a

Lera25 [3.4K]

Your friend asked you to bring a couple of bags of chips to his party. there are several brands of chips, each a different size and price. Write a formula that will help you find the price per gram for each bag.

x= price of bag of chips

y= number of grams

z=price per gram

$z= \frac{x}{y}$

Hope this helps!

6 0

3 years ago