All categories

2 years ago

Simplify the equation -4d - 37 = 7d + 18

Mathematics

2 answers:

allochka39001 [22]2 years ago

6 0

-4d - 37 = 7d + 18
-4x - 7d - 37 = 18
-11d - 37 = 18
+ 37 +37
-11d = 55
/-11 /-11
d = -5
So the answer is -5.

exis [7]2 years ago

5 0

Answer:

d=-5

Step-by-step explanation:

-4d-37=7d +18

move the terms to its correct side

-4d-7d=18+37

calculate the like terms together.

-11d=55

divide both sides by -11. both of the negavtive (-11) will cancel out and become d on the left and on the right 55 will be divided by -11 = -5. the 5 is negative because there's a negative -11 if there were a postive 11 it will be 5 instead of D=-5

You might be interested in

How many quaters are in $3

sergejj [24]

12.....because there are 4 quarters in $1

8 0

3 years ago

Read 2 more answers

An electric sale gives a reading equal to the true weight plus a random error that isnormally distributed with mean 0 and standa

Pepsi [2]

Answer:

a) 95% confidence interval estimate of the true weight is (3.026, 3.274)

b) 99% confidence interval estimate of the true weight is (2.944, 3.356)

Step-by-step explanation:

Confidence Interval can be calculated using M±ME where

M is the mean of five successive weightings (3.150)

ME is the margin of error from the mean

And margin of error (ME) can be calculated using the formula

ME= $\frac{t*s}{\sqrt{N} }$ where

t is the corresponding statistic in the given confidence level and degrees of freedom(t-score)

s is the standard deviation of the random error (0.1)

N is the sample size (5)

Using the numbers 95% confidence interval estimate of the true weight is:

3.150± $\frac{2.776*0.1}{\sqrt{5} }$ ≈3.150±0.124

And 99% confidence interval estimate of the true weight is:

3.150± $\frac{4.604*0.1}{\sqrt{5} }$ ≈3.150±0.206

3 0

3 years ago

. help needed please

Anastasy [175]

In order to do this, we would use order of operations. First, Parentheses, which is division with fractions, so we would do KCF,keep it, change it, flip it. keep the first fraction, change the operation to multiplication, then flip the next fraction, making it -7/9 x 3/1. the answer would be -2.33. multiply that by -2, and you would get -4.66, which is your answer. PLEASE MARK BRAINLIEST IF HELPFUL! :))

5 0

3 years ago

In Jamie's class, 7 out of 25 students have blue eyes. what percent of the class has blue eyes?

katovenus [111]

The answer is 28 %, this is the percent of the class with blue eyes.

5 0

2 years ago

Read 2 more answers

At a concert 20% of the audience members were teenagers.If the numbers of teenagers at the concert was 360, what was the total n

puteri [66]

So we know 20% of the audience are teenagers, and there are 360 teenagers.

Therefore, 1/5 of the audience members were teenagers, and that means 1/5 of the audience members is 360.