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4 years ago

8

5x+3x=8 Solution to the question and answer

2 answers:

In-s [12.5K]4 years ago

8 0

5x+3x=8 first you add the 5x and 3x to get 8x then the equation is 8x=8 which you then divide the 8 from 8x and get x=1

Sliva [168]4 years ago

6 0

Hi,

Solving:

$5x + 3x = 8 \\ (5 + 3)x = 8 \\ 8x = 8 \: \: \: \: \: | \div 8 \\ x = 1$

Answer: 1

Hope this helps.
If you have any questions about the answer comment below and I'll reply.
r3t40

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El promedio del 5 personas $ 20 si ingresan 3 personas con promedio de $ 60 ¿ cual es promedio del dinero de las personas

jasenka [17]

Answer:

El promedio de dinero de las personas es de $35 cada uno.

Step-by-step explanation:

Dado que el promedio del dinero de 5 personas es de $20 cada uno, para determinar, si ingresan 3 personas con promedio de $60 cada uno, cuál es promedio del dinero de las personas , se debe realizar el siguiente cálculo:

((5 x 20) + (3 x 60)) / 8 = X

(100 + 180) / 8 = X

280 / 8 = X

35 = X

Por lo tanto, el promedio de dinero de las personas es de $35 cada uno.

3 0

3 years ago

During the fall, you decide to rake leaves and charge $12 for coming to a house and raking, and then $9 for every hour you rake.

Vika [28.1K]

Answer:

15

Step-by-step explanation:

For 1 house, the charge just to go to a house is $12.

In each house you made $57.

$57 - $12 = $45

The charge per house just for raking was $45.

You charge $9/hour.

$45/($9/hr) = 5 hours

You shoveled 5 hours in each house.

3 * 5 hours = 15 hours

Answer: 15 hours

4 0

3 years ago

Solve the oblique triangle where side a has length 10 cm, side c has length 12 cm, and angle beta has measure thirty degrees. Ro

strojnjashka [21]

Answer:

The missing side is $B = 6.0\ cm$

The missing angles are $\alpha = 56.2$ and $\theta = 93.8$

Step-by-step explanation:

Given

$A = 10\ cm$

$C = 12\ cm$

$\beta = 30$

The implication of this question is to solve for the missing side and the two missing angles

Represent

Angle A with $\alpha$

Angle B with $\beta$

Angle C with $\theta$

Calculating B

This will be calculated using cosine formula as thus;

$B^2 = A^2 + C^2 - 2ACCos\beta$

Substitute values for A, C and $\beta$

$B^2 = 10^2 + 12^2 - 2 * 10 * 12 * Cos30$

$B^2 = 100 + 144 - 240 * 0.8660$

$B^2 = 100 + 144 - 207.8$

$B^2 = 36.2$

Take Square root of both sides

$B = \sqrt{36.2}$

$B = 6.0$ <em>(Approximated)</em>

Calculating $\alpha$

This will be calculated using cosine formula as thus;

$A^2 = B^2 + C^2 - 2BCCos\alpha$

Substitute values for A, B and C

$A^2 = B^2 + C^2 - 2BCCos\alpha$

$10^2 = 6^2 + 12^2 - 2 * 6 * 12 * Cos\alpha$

$100 = 36 + 144 - 144Cos\alpha$

Collect Like Terms

$100 - 36 - 144 = -144Cos\alpha$

$-80 = -144Cos\alpha$

Divide both sides by -144

$\frac{-80}{-144} = Cos\alpha$

$0.5556 = Cos\alpha$

$\alpha = cos^{-1}(0.5556)$

$\alpha = 56.2$ <em>(Approximated)</em>

Calculating $\theta$

This will be calculated using cosine formula as thus;

$C^2 = B^2 + A^2 - 2BACos\theta$

Substitute values for A, B and C

$12^2 = 6^2 + 10^2 - 2 * 6 * 10Cos\theta$

$144 = 36 + 100 - 120Cos\theta$

Collect Like Terms

$144 - 36 - 100 = -120Cos\theta$

$8 = -120Cos\theta$

Divide both sides by -120

$\frac{8}{-120} = Cos\theta$

$-0.0667= Cos\theta$

$\theta = cos^{-1}(-0.0667)$

$\theta = 93.8$ <em>(Approximated)</em>

4 0

4 years ago

Can someone help please?

alexandr1967 [171]

The slope is the change in Y over the change inX: Using the two points given: (3,9) and (1,3)

The slope is (9-3) / (3-1)

Slope = 6 / 2

Slope = 3

The answer is A.

3 0

4 years ago

Someone help me with this I will make you brain

Kazeer [188]

Answer: i believe it is B

Step-by-step explanation:

7 0

3 years ago