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Margaret [11]
2 years ago
8

15

Mathematics
1 answer:
IceJOKER [234]2 years ago
4 0

4x+3x=7x

18 girls-5%

Total no: of girlsx5/100=18

Total-100x18/5-360 girls

4x+3607x

360-7x-4x

360-3x

x=360/3-120

4x=4x120=480

3x=3x120=360

Total no: of students=480+360-840

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Please read and answer the problem and show your work
PilotLPTM [1.2K]

Answer:

x > -4.

Step-by-step explanation:

Solving for x by dividing -3 to both side leaving x by itself.

When dividing or multiplying a negative value that has a variable the inequality switches sides. Instead of x < -4 it is x > -4. For more information or to understand inequality search for inequality video online.

7 0
2 years ago
Joe saves most of his allowance every week since his 7birthday. If joe saves $4 per week, how much money would he have saved on
maksim [4K]

Answer:

multiply

Step-by-step explanation:

7x 15= 105

105x4=420

then add 105+420= 44,100

6 0
3 years ago
Read 2 more answers
A rectangular lawn is 24 feet wide by 32 feet long. A sidewalk will be built along the inside edges of all four sides. The remai
levacccp [35]
So the original lawn has an area
24 × 32 = 768 the new lawn will have area 425
this means the area of the sidewalk will be 768-425=343
now the sidewalk is a certain width of we draw it out and label it x we see the lawn has an area of
(32 - 2x)(24 - 2x) = 425 \\ 768 - 64x - 48x + 4 {x}^{2}  = 425 \\ 4 {x}^{2}  - 112x  + 343 = 0
use the quadratic formula to solve. then you will know how wide the sidewalk is. I will attach picture

5 0
3 years ago
on patrick's test he got 14 multiple choice questions and 6 true or false questions correct. patrick also got 1 multiple choice
solniwko [45]
So first add the multiple choice together to get 15 and the true/false together to get 10. Then add those together to get 25. Since there was 15 multiple choice, divide 15 by 25 to get 3/5. This is .8 in decimal form and to convert it to a percent multiply it by 100 to get 80%. Hope this helps!
8 0
3 years ago
Answer choices are<br> 14<br><br><br> 24<br><br> 28<br><br><br><br> 48
MrRa [10]

Answer: 24 square units

Step-by-step explanation:

It appears the shaded area of the rectangle is half of the rectangle's area. This means if we find the area of the rectangle and divide it by 2 we will know the area of the shaded portion.

The formula for the area of a rectangle is lw=A

Where

l is the length (8 for this)

w is the width (6 for this)

A is the area

However, since we are finding half the area we will divide lw by 2

Sub the values into the formula

\frac{lw}{2} =A\\\frac{(8)(6)}{2} =A\\\frac{48}{2} =A\\24=A

4 0
2 years ago
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