All categories

3 years ago

Look at picture. Please help me

Mathematics

1 answer:

tester [92]3 years ago

5 0

Step-by-step explanation:

4(3x + 2) = 4(2x + 3) + 4x do the multiplying

12x + 8 = 8x + 12 + 4x export like terms to the same side of the equation and add/subtract like terms

12x - 12x = 4

0 = 4 this is not an equation so there's no solution to this one equation

10(x + 4) - 3 = 14x + 1 do the multiplying

10x + 40 - 3 = 14x + 1 export like terms to the same side of the equation and add/subtract like terms

36 = 4x

9 = x there's one solution to this equation

1/2 (10x + 15) - 3/2 = 2x + 6 + 3x do the multiplying

(10x + 15)/2 - 3/2 = 5x + 6 export like terms to the same side of the equation and add/subtract like terms

(10x + 12)/2 = 5x + 6 multiply both sides with 2 so we can get rid of fraction

10x + 12 = 10x + 12

0 = 0 there's infinetly many solutions to this equation meaning whatever number written instead of x there will a solution.

You might be interested in

Evaluate. Write your answer as a fraction or whole number without exponents.

zloy xaker [14]

The answer to the question is 1/64

7 0

4 years ago

Read 2 more answers

Are the following two matrices inverses of one

KIM [24]

Answer: d

Step-by-step explanation:

3 0

3 years ago

A study of homeowners in the 5th congressional district in Maryland found that their annual household incomes are normally distr

tino4ka555 [31]

Answer:

The minimum income level for this target group is of $51,253.6.

Step-by-step explanation:

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of $41,182 and a standard deviation of $11,990

This means that $\mu = 41182, \sigma = 11990$

Find the minimum income level for this target group.

The 100 - 20 = 80th percentile, which is X when Z has a p-value of 0.8, so X when Z = 0.84.

$Z = \frac{X - \mu}{\sigma}$

$0.84 = \frac{X - 41182}{11990}$

$X - 41182 = 0.84*11990$

$X = 51253.6$

The minimum income level for this target group is of $51,253.6.

4 0

3 years ago

Mr Rai sale a watch for Rs 2035 a profit of 10% how much money has he paid to buy the also find his profit amount

Firdavs [7]

Answer:

He paid Rs 1,850 to buy the watch

Profit = Rs 185

Step-by-step explanation:

Cost price = x

Profit = 10% of x

Selling price = Rs 2035

Profit = Selling price - cost price

10% of x = 2035 - x

0.1x = 2035 - x

0.1x + x = 2035

1.1x = 2035

x = 2035 / 1.1

x = 1,850

Cost price = x = Rs 1,850

Profit = 10% of x

= 10% of 1,850

= 0.1 × 1850

= 185

Profit = Rs 185

5 0

3 years ago

Evaluate 7m+2n-8p/n for m=-4, n=2, and p=1.5.

IRISSAK [1]

7( -4) + 2(2) -8(1.5)/2
= -28 + 4 - 12/2
= -28 + 4 -6
=-24-6
= -30
Your answer is -30.

8 0

3 years ago