All categories

3 years ago

Help with algebra pleaseeeeeee

Mathematics

2 answers:

Anastaziya [24]3 years ago

7 0

Answer:

y= 6 and x=-2/3

Step-by-step explanation:

Mariulka [41]3 years ago

5 0

(-72,0) is x

(0,8) is y

You might be interested in

Which is the simplified form of the expression (6^-2•6^5)^-3

Arisa [49]

Answer:

Step-by-step explanation:

$( {6}^{ - 2} \times {6}^{5} ) ^{ - 3} \\ = ( {6}^{3} )^{ - 3} \\ = {6}^{0} \\ = 1$

6 0

3 years ago

Read 2 more answers

7. Fred had 85 marbles. After a few games, he had 120% of his original number. How many

Gnoma [55]

Answer:

102 marbles

Step-by-step explanation:

100% of 85 is 85.

20% of 85 = 17

85 + 17 = 102

Hope that helps!

4 0

3 years ago

The length of a rectangle is 3 meters longer than the width. if the area is 36 square meters, find the rectangle's dimensions.

kompoz [17]

Here you are. you can see my explication.
have fun

8 0

3 years ago

Jenna and Heidi together have $60. Jenna has $9 more than twice Heidi’s amount. How much money does each have?

Marina86 [1]

Jenna has $43 and Heidi has $17.

Step-by-step explanation:

Total amount = $60

Let,

Amount of Jenna = x

Amount of Heidi = y

According to given statement;

x+y=60 Eqn 1

x=2y+9 Eqn 2

Putting value of Eqn 2 in Eqn 1;

$(2y+9)+y=60\\2y+9+y=60\\3y=60-9\\3y=51$

Dividing both sides by 3,

$\frac{3y}{3}=\frac{51}{3}\\y=17\\$

Putting y=17 in Eqn 2

$x=2(17)+9\\x=34+9\\x=43$

Jenna has $43 and Heidi has $17.

Keywords: linear equations, substitution method

Learn more about substitution method at:

#LearnwithBrainly

4 0

3 years ago

It is said that happy and healthy workers are efficient and productive. A company that manufactures exercising machines wanted t

denpristay [2]

Answer:

Confidence interval is 0.7 ≤ p ≤ 0.8

The margin of error is 7.1 %

Step-by-step explanation:

We have to calculate a 98% confidence interval for the proportion.

The sample proportion is p=0.75.

The standard error of the proportion is:

Here we have, the proportion or point estimate given by

= 150/200 = 0.75

Sample size, n = 200

The formula for confidence interval, CI, given a proportion, is;

At 98% z = ±2.326348

Plugging in the values of, , z and n we get;

CI = 0.6787704 ≤ p ≤ 0.8212296

To one decimal place, we have

CI = 0.7 ≤ p ≤ 0.8

3 0

3 years ago