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ivanzaharov [21]
3 years ago
8

Cuanto es 7x8-(31-61)

Mathematics
1 answer:
Crazy boy [7]3 years ago
5 0

Answer:

la respuesta es 86

Step-by-step explanation:

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Simplify (-5/7)÷(-1/2) show work
anastassius [24]

Answer:

\frac{10}{7}  \: or \: 1 \frac{3}{7}

Step-by-step explanation:

-  \frac{5}{7}  \div  -  \frac{1}{2}  =  -  \frac{5}{7}  \times  -  \frac{2}{1}

First you reciprocate the fractions and change the division sign to multiplication.

- 5 \times  - 2 = 10 \: and \: 7 \times 1 = 7

Therefore the answer is:

\frac{10}{7}

3 0
3 years ago
Fernando has been saving money to buy an e–book reader. A store has just marked down the price of its readers by 40%. Each reade
lorasvet [3.4K]

Answer:

1. $90

2. $85

3. $ 149.6Step-by-step explanation:

6 0
3 years ago
Fiona's school is in the shape of a triangle, with three hallways connecting the corners. Fiona enters the building and walks 90
noname [10]

Answer:

between 30 yards and 150 yards

Step-by-step explanation:

we know that

The <u><em>Triangle Inequality Theorem</em></u> states that the sum of any 2 sides of a triangle must be greater than the measure of the third side

Let

x ----> the possible lengths of the third hallway in yards

<em>Applying the Triangle Inequality Theorem</em>

1) 90+60 > x

150 > x

Rewrite

x < 150 yd

2) 60+x> 90

x > 90-60

x > 30 yd

The possible lengths of the third hallway in yards is the interval

(30,150)

All real numbers greater than 30 yards and less than 150 yards

therefore

between 30 yards and 150 yards

4 0
3 years ago
Read 2 more answers
Expand and simplify the following <br> 5(m – 8) - 4(m – 7)
DanielleElmas [232]

Step-by-step explanation:

5(m – 8) - 4(m – 7)

5m-40-4m+28

m -12

7 0
3 years ago
Read 2 more answers
Which expression is equivalent?
chubhunter [2.5K]
It'll be 8 |a^3|.

we don't use modulus on 8 cuz it is obviously positive but we do not know about a^6 when rooted it can be +ve or -ve.

6 0
3 years ago
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