Ok -7-7=-14 because your subtracting a negative with a negative and then it will be a negative then if you multiply a negative and a negative it will be a positive

8 0

3 years ago

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The sum of 5 times a number and 8 is equal to 9

Irina-Kira [14]

Answer:

The unknown number is $\frac{1}{5}$

Step-by-step explanation:

Let's make the unknown number x.

The sum of 5 TIMES a number (x) & 8 is 9.

Let's write it mathematically.

5x + 8 =9

We are trying to find the unknown number, so let's remove all the numbers from the left side to find x. Minus 8.

5x=1

5x is basically 5 times x, so to find x, we need to divide and from there we can remove 5.

x= $\frac{1}{5}$

4 0

3 years ago

Mateo was training for a triathlon (a multisport race which includes 1.5 km swim, 40 km bike ride and a 10 km run). His speed fo

Anna007 [38]

Answer:

swimming: 0,75h

biking: 1,6h

running: 1h

Step-by-step explanation:

5 0

3 years ago

I tried but kept getting it wrong ;-;Find the area of the composite figure.​

I tried but kept getting it wrong ;-;Find the area of the composite figure.