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3 years ago

Using only words solve 8x+3=27 step by step

Mathematics

2 answers:

erik [133]3 years ago

5 0

Answer:

X=3

Step-by-step explanation:

Subtract 3 from both sides

Simplify 27-3 to 24

Divide both sides by 8

Simplify 24/8 to 3

ruslelena [56]3 years ago

3 0

Step-by-step explanation:

Your goal is to isolate x, so your first step is to subtract by 3 on both sides. That leaves you with the equation 8x=24. Divide by 8 on both sides (since x is being mutliplied b 8) and you get x=3

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x,y, and z to the nearest tenth .(hint: use altitude and leg rules) PLEASE HELP FAST !!! please solve and show steps

madreJ [45]

Use the Pythagorean theorem to find z:

z = √(6^2 + 9^2)

z= √(36 + 81)

z = √117

z = 3√13 = 10.8

Use leg rule to find x:

x/6 = 6/9

Cross multiply:

9x = 36

Divide both sides by 9:

x = 36/9

x = 4

Use Pythagorean theorem to find y:

y = √(6^2 + 4^2)

y= √(36 + 16)

y = √52

y = 2√13 = 7.2

7 0

3 years ago

15x^2 + 41x + 28 STEP BY STEP ANSWER PLSSS

maria [59]

Answer:

(3x+4)(5x+7)

Step-by-step explanation:

15x^2 +41x+28

Factor the expression by grouping. First, the expression needs to be rewritten as 15x^2 +ax+bx+28. To find a and b, set up a system to be solved.

a+b=41

ab=15×28=420

Since ab is positive, a and b have the same sign. Since a+b is positive, a and b are both positive. List all such integer pairs that give product 420.

1,420

2,210

3,140

4,105

5,84

6,70

7,60

10,42

12,35

14,30

15,28

20,21

Calculate the sum for each pair.

1+420=421

2+210=212

3+140=143

4+105=109

5+84=89

6+70=76

7+60=67

10+42=52

12+35=47

14+30=44

15+28=43

20+21=41

The solution is the pair that gives sum 41.

a=20

b=21

Rewrite 15x^2 +41x+28 as (15x^2 +20x)+(21x+28).

(15x^2 +20x)+(21x+28)

Factor out 5x in the first and 7 in the second group.

5x(3x+4)+7(3x+4)

Factor out common term 3x+4 by using distributive property.

(3x+4)(5x+7)

7 0

3 years ago

Read 2 more answers

If log9 x = 3/2 what is the value of x ? 1 3/2 2 3 27/2 4 . 27

sweet-ann [11.9K]

log 9 X= 3/2

x= 3.5

or x= 7/2

5 0

3 years ago

Can someone help pls!!

kari74 [83]

Answer:

C) 42.14 cm²

Step-by-step explanation:

Recall the area formulas for a square and circle:

Area of square: A=s²

Area of circle: A=πr²

Given:

π=3.14

s=14

r=s/2=14/2=7

Therefore, the area of the square is A=14²=196 cm²

The area of the two semicircles is A=3.14(7)²=3.14(49)=153.86 cm²

Find the difference between the two areas to get the shaded area:

196 - 153.86 = 42.14

Therefore, the shaded area is 42.14 cm², making C the correct choice.

5 0

3 years ago

Read 2 more answers

What is the surface of the prism?

jasenka [17]

Given :-

Length :- 8m
Width :- 10
Height :- 10m

To find :-

Surface area

Solution :-

formula for Surface Area = 2(LW + WH + HL)

putting the known values,

Surface Area = 2(8×10 + 10×10 + 10×8) m²

Surface Area = 2(260) m²

Surface Area = 520m² ( Option C)

4 0

2 years ago

Using only words solve 8x+3=27 step by step​

Using only words solve 8x+3=27 step by step