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2 years ago

What is the value of x in the equation 0.7x – 1.4 = –3.5? –7 –3 3 7

Mathematics

2 answers:

tatyana61 [14]2 years ago

7 0

Answer:

-3

Step-by-step explanation:

0.7x-1.4=-3.5

Add 1.4 to both sides:

0.7x=-2.1

Divide 0.7 from both sides:

x=-3

Lynna [10]2 years ago

4 0

-3

1. Add -1.4 to each side.
2. Divide by 0.7 on each side.

Hope this helps

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Please help me, this is PEDMAS

rusak2 [61]

Answer:

1). 183

2). 83

3). 353

4). -2652

5). 59

6). 510

7). -293

8). 79

9). 78

10). 87

Step-by-step explanation:

Considering order of operation, parenthesis must be simplified first.

The solutions to the given questions are shown below;

$1). \ \ 5+(7\times (3+2)^2) + 3=8 + (7\times (5)^2) = 8 + (7\times 25) = 8 + 175 = 183$

$2). \ 16+(8+ (6+2)^2) - 5=16-5 + (8+ (8)^2) = 11 + (8+64) = 11 + 72 = 83$

$3). \ (15+ 3)^2 + ((14+6)+3^2)= (18)^2 + ((20) + 9) = 324 + (29) = 353$

$4). \ ((11+ 2)-(24+2)^2)\times 2^2 = (13 - 676) \times 4 = (-663)\times 4 = -2652$

$5). \ ((4+3)^2+ 6) -5+3^2= (49 + 6) - 5 + 9= (49+6+9) - 5 = 64-5 = 59$

$6). \ (20+ 2)^2 +((15+7)+2^2)= (484) + (22+ 4)= 484 + 26 =510$

$7). \ ((12 + 4)- (15+3)^2+ 5^2 = (16 - 324) + 25 = -318 + 25 = -293$

$8). \ (6^2+ (24+ 3+5^2)) - 3^2= (36 + (52)) - 9 = (88) - 9 = 79$

$9). \ ((10-4)^2\times 2) + 2 + 2^2= ((6)^2 \times 2) + 2 + 4 = (36\times 2)+ 6 = 72 + 6 = 78$

$10). \ (7^2 + (16 + 8 + 2^2)) + 3^2 = (49 + 28) + 9 = 78 + 9 = 87$

3 0

2 years ago

What is 2 1/4 as a fraction

arlik [135]

I don’t know if that 2 and 1/4 or 21/4 so I’ll do both.
2 and 1/4 is = 9/4
21/4 is = 5 and 1/4

6 0

2 years ago

Read 2 more answers

Rao is x years old now and Pau is 12 years older than Rao. In two years Pau will be exactly twice as old as Rao is then. How old

Ratling [72]

Rao is 5 years old. In two years he will be 7 and Pau will be 14. Now minus 2 by 7 and you get 5.

6 0

3 years ago

Students sold 300 tickets for a playoff game in basketball at school. Some tickets are for students and cost $4.00, while the re

Neko [114]

So baically

reresent
s=number of studne tickes bouthgt
a=number of adult tickets bought

300 tickest sold
total=300
a+s=300

value=rate times number of peple

student value=4s
adults value=10a
total value=1950
4s+10a=1950

a. system of equations are
s+a=300
4s+10a=1950

b. solve

s+a=300
4s+10a=1950

a+s=300
multiply by -4
-4s-4a=-1200
add to other eqaution

4s+10a=1950
<u>-4s-4a=-1200 + </u>
0s+6a=750

6a=750
divide 6
a=125

subsiute
s+a=300
s+125=300
subtract 125
s=175

a. s+a=300
4s+10a=1950

b. solution above
175 students
125 aduls

7 0

3 years ago

Can anyone help me solve this equation?

andrew-mc [135]

the first box put 21 the second one put 7 then the last one put 7

6 0

2 years ago