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3 years ago

Solve and graph inequality

Mathematics

1 answer:

alina1380 [7]3 years ago

4 0

Her sister could be about four or five

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Free_Kalibri [48]

Answer:

y is equal to67 degrees

8 0

3 years ago

3a-28-7a=10a I don’t understand it

Lelechka [254]

Answer: a= -2

Step-by-step explanation:

its a = minus 2

5 0

3 years ago

How to do double sided equations

Veronika [31]

Answer:

multiply each side

Step-by-step explanation: this is becasue when numbers are beside eachother they mean multiply

7 0

3 years ago

h(x)=x 2 −1h, left parenthesis, x, right parenthesis, equals, x, squared, minus, 1 Over which interval does h hh have a negative

Semenov [28]

Answer:

(C)−3 ≤ x ≤ 1

Step-by-step explanation:

The average rate of change of function h over the interval $a \leq x\leq b$ , is given by this expression:

$\dfrac{h(b)-h(a)}{b-a}$

Given the function $h(x)=x^2-1$ on the interval:− 3 ≤ x ≤ 1

$h(1)=1^2-1=0\\h(-3)=(-3)^2-1=9-1=8$

The average rate of change:

$\dfrac{h(b)-h(a)}{b-a}=\dfrac{0-8}{1-(-3)}=\dfrac{-8}{4}=-2$

Therefore, the function has a negative average rate of change over the interval − 3 ≤ x ≤ 1.

CHECK:

(A)Average rate of change of h(x) over the interval − 3 ≤ x ≤ 5=2

(B)Average rate of change of h(x) over the interval 1 ≤ x ≤ 4=5

(D)Average rate of change of h(x) over the interval − 1 ≤ x ≤ 5=4

5 0

3 years ago

Solve for x. Round to the nearest tenth, if necessary.

Igoryamba

Answer: $33.2$

Step-by-step explanation:

Given

CE=85

$\angle C=67^{\circ}$

In $\triangle CDE$ , using trigonometry

$\Rightarrow \cos 67^{\circ}=\dfrac{CD}{CE}\\\\\Rightarrow CD=CE\cos 67^{\circ}\\\\\Rightarrow CD=85\times \cos 67^{\circ}\\\\\Rightarrow CD=33.2$

6 0

3 years ago

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