3 years ago

Please Help......

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

7 0

This is the answer to it

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winnie and kevin like to create their own triathlon courses to challenge each other. last weekend, winnie created a course that

deff fn [24]

Answer: the answer is 121/4

Step-by-step explanation:

8 0

3 years ago

Find the value of a and of b for which<br>(a) the solution of x2 + ax < b is<br>-2<x < 4

KengaRu [80]

Answer: $a = -2$

$b = 8$

Step-by-step explanation:

Given :

$x^{2} +ax$

re - writing the equation , we have

$x^{2} +ax-b$

we need to find the value of a and b for which -2<x < 4 , this means that the roots of the quadratic equation are -2<x < 4.

The formula for finding the quadratic equation when the roots are known is :

$x^{2}$ - sum of roots(x) + product of root = 0

sum of roots = -2 + 4 = 2

product of roots = -2 x 4 = -8

substituting into the formula , we have:

$x^{2} -2x-8=0$ , which could be written in inequality form as

$x^{2} -2x-8$

comparing with $x^{2} +ax-b$ , it means that :

$a = -2$

$b = 8$

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3 years ago

This is 5th grade math pls help

Mamont248 [21]

Answer:

He can make 20 cakes

Step-by-step explanation:

Im in highshool so I know the answer

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3 years ago

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The difference of seven halves and six quarters is multiplied by negative two fifths. Find this rational number.

malfutka [58]

First, the difference is 7/2 - 6/4 = 14/4 - 6/4 = 8/4

Now multiply it: 8/4 x (-2/5) = -16/20 = -4/5

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3 years ago

Which statement shows the associative property of addition?

morpeh [17]

Answer:

the third one

Step-by-step explanation:

it's the only correct one with only addition

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3 years ago