3 years ago

Use doubles to find the sum of 7+8.

Mathematics

2 answers:

lyudmila [28]3 years ago

6 0

I believe, 8+8=16, 16-1=15

Tems11 [23]3 years ago

4 0

7+8 =15
so u can use 7+7 +1
since 15 is off number there is no exact double number for that u have to use 1

You might be interested in

The time required to drive a fixed distance varies inversely as the speed. It takes 40 hr at a speed of 10 km/h to drive a fixed

patriot [66]

Answer:

50 hours

Step-by-step explanation:

Given data

Time=40hr

Speed=10km/hr

Let us find the fixed distance first

Speed= distance/Time

10= distance/40

distance= 10*40

distance= 400miles

Now our speed= 8km/h

hence the time is

8= 400/time

time= 400/8

time=50 hours

Hence the time is 50 hours

3 0

2 years ago

A box contains 5 blue marbles 3 red marbles and 6 white marbles. if three marbles are drawn, without replacement, what is the pr

ziro4ka [17]

The probability that all three are blue it's 3:14

8 0

2 years ago

(7^0)^x = 1 what is x ?

Nataly_w [17]

7^0 = 1
1^x = 1
x = 0

5 0

2 years ago

The measure of an angle exceeds 3 times its supplement by 4. Find the measure of the angles.

Dafna11 [192]

X=3y+4, y=y
x+y=180, 3y+4+y=180, 4y+4=180
4y+4=180
4y=176
y=44
x=3(44)+4, x=132+4, x=136

(I am not a very good artist in this case:)

4 0

2 years ago

Frank kept track of the amount of money he earned each day for 2 weeks.the amounts,in dollars,are listed below.

Lena [83]

Answer:

Step-by-step explanation:

5 0

2 years ago