2 years ago

Evaluate without a calculator:

Mathematics

1 answer:

noname [10]2 years ago

4 0

Answer:

240

Step-by-step explanation:

4 x -5 = -20

-20 x -12 = 240

240 is your answer

hope this helps!

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Determine the value of y, if x is 7.<br> y = x2 - 1

ddd [48]

Answer:

Step-by-step explanation:

If x is 7, then 7 * 2 = 13, and 14 - 1 = 13.

Hope that this helps!

4 0

3 years ago

Read 2 more answers

class A has 13 pupils and class b has 28 pupils both classes sit the same maths test the mean score for class A is 23 the mean s

Wittaler [7]

Answer:

46.22

Step-by-step explanation:

Class A total= 23 x 13= 299

Clas B total= 57 x 28= 1596

total score= 299 + 1596 = 1895

total mean= 1895 ÷ (13+28) = 1895 ÷ 41

= 46.22

7 0

2 years ago

Please help me with this question... I'm confused if the answer is "None of these" OR "Space"...

Scorpion4ik [409]

None of this because you can't answer 8+ 9 or with can't answer 56 <89

8 0

3 years ago

........................................

Elena L [17]

Answer:

The answer I got for this equation is x=5

I hope this image helps of showing you how to solve the equation.

5 0

3 years ago

Marking Brainlist 7-9g+3g

coldgirl [10]

Answer:

7-6g

Then you do the 1 step equation.

Divide both sides by 6.

1.16=g

I'm not sure if it's right.

5 0

3 years ago