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2 years ago

Please help with 8 and 10

Mathematics

1 answer:

DiKsa [7]2 years ago

7 0

Answer:

x = 28 for 8

and

x = 2 for 10

Step-by-step explanation:

hope it helps

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247 + 794 is the same as ? + 800

Dmitry [639]

241 + 800 = 1041
247 + 794 = 1041

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3 years ago

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Find AC What Is The Equation To AC?

In-s [12.5K]

Given:

Given that ABC is a right triangle.

The length of AB is 7 units.

The measure of ∠A is 65°

We need to determine the length of AC

Length of AC:

The length of AC can be determined using the trigonometric ratio.

Thus, we have;

$cos \ \theta=\frac{adj}{hyp}$

Where the value of $\theta$ is 65° and the side adjacent to the angle is AC and the side hypotenuse to the angle is AB.

Substituting the values, we have;

$cos \ 65^{\circ}=\frac{AC}{AB}$

Substituting AB = 7, we have;

$cos \ 65^{\circ}=\frac{AC}{7}$

Multiplying both sides by 7, we get;

$cos \ 65^{\circ} \times 7=AC$

$0.423 \times 7=AC$

$2.961=AC$

Rounding off to the nearest hundredth, we get;

$2.96=AC$

Thus, the length of AC is 2.96 units.

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3 years ago

1. The position of a particle moving along a coordinate axis is given by: s(t) = t^2 - 5t + 1. a) Find the speed of the particle

zimovet [89]

Answer: $\left | 2t-5\right |,\ 2,\ 2t-5$

Step-by-step explanation:

Given

Position of the particle moving along the coordinate axis is given by

$s(t)=t^2-5t+1$

Speed of the particle is given by

$\Rightarrow v=\dfrac{ds}{dt}\\\\\Rightarrow v=\dfrac{d(t^2-5t+1)}{dt}\\\\\Rightarrow v=\left | 2t-5\right |$

Acceleration of the particle is

$\Rightarrow a=\dfrac{dv}{dt}\\\\\Rightarrow a=2$

velocity can be negative, but speed cannot

$\Rightarrow v=\dfrac{ds}{dt}\\\\\Rightarrow v=\dfrac{d(t^2-5t+1)}{dt}\\\\\Rightarrow v=2t-5$

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3 years ago

a postcard has an area of 24 square inches. two enlargements of the postcard have areas of 54 square inches and 96 square inches

LekaFEV [45]

So,

The length is always 1.5 times the width.

l = 1.5w

lw = 24
lw = 54
lw = 96

Or, we could put it this way:
1.5w(w) = 24
1.5w(w) = 54
1.5w(w) = 96

So,
1.5w^2=24
1.5w^2=54
1.5w^2=96

Dividing both sides by 1.5, we get:
w^2 = 16
w^2 = 36
w^2 = 64

And solving for the only logical dimension, we get:
w = 4
w = 6
w = 8

And their corresponding lengths:
l = 1.5(4) = 6
l = 1.5(6) = 9
l = 1.5(8) = 12

So a few lengths could be:
(l,w)
(6,4)
(9,6)
(12,8)

Of course, there are infinite solutions.

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2 years ago

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3^x + 4^x = 25 Find x

ArbitrLikvidat [17]

Answer:

x=2

3^2=9

+ 4^2=16

9+16= 25

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3 years ago

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