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Roman55 [17]
4 years ago
9

How to remember multiplication

Mathematics
1 answer:
Aleonysh [2.5K]4 years ago
3 0
if u get stuck on a problem like 6×6. count 6 six times
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31 more than a number is 12
Juli2301 [7.4K]

Answer:

-19.

Step-by-step explanation:

-19+31 gets you 12.

6 0
3 years ago
Read 2 more answers
Raymond has $800 in a savings account that earns 10% interest per year.The interest is not compounded. How Much Interest Will He
Gennadij [26K]

The amount of interest he would earn in one (1) year is equal to $80.

<u>Given the following data:</u>

  • Interest rate = 10% = 0.1
  • Principal = $800
  • Time = 1 year

To determine how much interest he would earn in one (1) year:

<h3>How to calculate simple interest</h3>

Mathematically, simple interest is given by this formula:

I = PRT

<u>Where:</u>

  • S.I is the simple interest.
  • P is the principal or starting amount.
  • R is the interest rate.
  • T is the time measured in years.

Substituting the given parameters into the formula, we have;

I=800 \times 0.1 \times 1

Simple interest = $80

Read more on simple interest here: brainly.com/question/24341207

8 0
3 years ago
I need help on number 7​
PtichkaEL [24]

Answer:

M = 1/3

Step-by-step explanation:

5 0
3 years ago
On his outward journey, Ali travelled at a speed of s km/h for 2.5 hours. On his return journey, he increased his speed by 4 km/
den301095 [7]

Answer:

3.08 km/h.

Step-by-step explanation:

We know that,

Speed=\dfrac{Distance}{Time}

Ali traveled at a speed of s km/h for 2.5 hours.

Let d be the distance and t be the time.

2.5=\dfrac{d}{t}

2.5t=d      ...(1)

On his return journey, he increased his speed by 4 km/h and saved 15 minutes. So, distance is d and times is t-15.

4=\dfrac{d}{t-15}

4(t-15)=d      ...(2)

From (1) and (2), we get

4(t-15)=2.5t

4t-60-2.5t=0

1.5t=60

t=40

Put t=40 in (1).

d=2.5(40)=100

So, t=40 and d=100.

Now,

Total distance = d + d = 100 + 100 = 200

Total time = t + t - 15 = 40 + 40 - 15 = 65

So, the average speed is

\text{Average speed}=\dfrac{\text{Total distance}}{\text{Total time}}

\text{Average speed}=\dfrac{200}{65}

\text{Average speed}\approx 3.08

Therefore, the average speed is 3.08 km/h.

3 0
4 years ago
If f(x) =-x+5and g(x) =x^2 what is (g•f)(-1)
Sliva [168]

Answer:

36

Step-by-step explanation:

g(f(-1))

f(-1)=1+5=6

g(6)=6^2=36

4 0
3 years ago
Read 2 more answers
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