3 years ago

Both of these please theyre simple i just dont know how

Mathematics

1 answer:

Lana71 [14]3 years ago

5 0

I hope this helps you

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I NEED HELP :_( Which of the following points is in the solution set of y > -x∧2 + 5? (0, 5) (2, 4) (1, 3)

marysya [2.9K]

Answer:

$\huge\boxed{(2;\ 4)}$

Step-by-step explanation:

We have

$y>-x^2+5$

Put the coordinates of the given points and check the inequality:

For (0; 5) → x = 0; y = 5

$5>-0^2+5\\5>0+5\\5>5\qquad\bold{FALSE}$

For (2; 4) → x = 2, y = 4

$4>-2^2+5\\4>-4+5\\4>1\qquad\bold{TRUE}$

For (1; 3) → x = 1, y = 3

$3>1^2+5\\3>1+5\\3>6\qquad\bold{FALSE}$

7 0

3 years ago

Factor completely<br> x^2 - 3x - 28

lbvjy [14]

Answer:

(x-7) (x+4)

Step-by-step explanation:

x^2 - 3x - 28

What two numbers multiply to -28 and add to -3

-7*4 = -28

-7+4 = -3

(x-7) (x+4)

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3 years ago

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Find the area of the figure

statuscvo [17]

I just looked it up and it said it is 180

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3 years ago

Solve the proportion using cross products. Round to the nearest hundredth if necessary. $18.45/m gal = $3.60/7.5gal

sveta [45]

$\dfrac{\$18.45}{n \text { gallon}} = \dfrac{\$3.60}{7.5 \text { gallon}}$

Cross multiply
$n \times \ 3.60 = 7.5 \times \ 18.45$

Combine like terms
$3.60n = 138.375$

Find n
$n = 138.375\div 360$

Answer
$n = 0.38 \text { (nearest hundredth)}$

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3 years ago

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A motorcyclist rides 976 miles, using 30.5 gallons of gasoline. What is the mileage, in miles per gallon

IgorC [24]

D 32 miles to the gallon
976 divided by 30.5 equals 32

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2 years ago

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