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Kay [80]
3 years ago
9

Can you help me with three questions? -2x + 3 -x + 4 -x - 19

Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
6 0

-2x=-3

x=1.5

-x=-4

x=4

-x=19

x=-19

Hope this helps?

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the perimeter of a regtangular garden is 100 ft. The length of the garden is 8 ft longer than twice the width. Find the length a
Marat540 [252]
Ok,so the equation is 2x +8=100 but their are  4 sides, so you will add 2x+2x and 8+8, so that will equal 4x +16=100. subtract 16 from 100 and it will give you 84.divide 84 by 4 and it will give you 21.  to check your answer multiply 24 times  add 16 and it gives you 100
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4 years ago
The ratio 15:60 in simplest form
olga nikolaevna [1]
15:60=\dfrac{15}{60}=\dfrac{15:15}{60:15}=\dfrac{1}{4}=\boxed{1:4}
4 0
3 years ago
Read 2 more answers
GCF & LCM PICTURE INCLUDED
svp [43]

Answer:  A) 6250, 2500

<u>Step-by-step explanation:</u>

Factor the numbers.  What they have in common is the GCF.  

The GCF times everything leftover is the LCM.

6250: 5 × 5 × 5 × 5 × 5 × 2

2500: 5 × 5 × 5 × 5 × 2 × 2

What they have in common is the GCF:

6250: <u>5 × 5 × 5 × 5</u> × 5 × <u>2</u>

2500: <u>5 × 5 × 5 × 5</u> × 2 × <u>2</u>

GCF = 5 × 5 × 5 × 5 × 2 = 1250

GCF times everything leftover is the LCM:

6250: 5 × 5 × 5 × 5 × <u>5</u> × 2

2500: 5 × 5 × 5 × 5 × <u>2</u> × 2

LCM: 1250 × 5 × 2 = 12500

5 0
3 years ago
A building manager installs sensors to see how often people turn off the lights when they leave the room. After a month the mana
vichka [17]

Answer:

D. 68%

Step-by-step explanation:

The following statistics are given;

sample mean = 47%

s = 5% ; the sample standard deviation

n = 625 ; the sample size

The confidence interval for a population mean is given as;

sample mean ± z-score*\frac{s}{\sqrt{n} }

Substituting the above values we have;

47 ± z-score*\frac{5}{\sqrt{625} }

47 ± z-score*0.2

The confidence interval has been given as;

lower limit = 46.8%

upper limit = 47.2%

We can use any of these two values with the above expression to solve for the z-score. Using the lower limit we have the following equation;

47 - z-score*0.2 = 46.8

-z-score*0.2 = 46.8 - 47

-z-score*0.2 = -0.2

z-score = 1

The area of the standard normal curve between -1 and +1 will be the confidence level for the given confidence interval.

Pr( -1<Z<1 ) = 0.68 = 68%

From the Empirical rule

6 0
4 years ago
Read 2 more answers
Please help, will read you with Brainliest. Please check ALL that apply.​
Musya8 [376]

Answer:correct answers are:

A.m<JPX=90°

B.XY & JK form right angles

E. JP=KP

F.XY⊥JK

Step-by-step explanation:

hope this helps

5 0
3 years ago
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