All categories

2 years ago

Which doubles fact helps you solve 8+7=15? Write the number sentence.

Mathematics

2 answers:

12345 [234]2 years ago

7 0

8 + 8 = 16
16 - 1 = 15

or

7 + 7 = 14
14+1 = 15

lukranit [14]2 years ago

7 0

Answer with explanation:

There are following double facts

When a Number is added to itself the result is twice of that number.

1+1=2 ×1=2

2+2=2×2=4

3 +3=2×3=6

4+4=2×4=8

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

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

Number 15 can be written in two ways

15=14+1-----(1)

=16-1------(2)

So, the double fact that we can use to solve , 8+7=15 are

1.→ 8+7

=14+1

=7+7+1

=(7+7)+1

2. →8+7

=15-1

=(8+8)-1

You might be interested in

How do you solve 12x =144

julia-pushkina [17]

1st. Try to make x by itself. Divide 12 on each side.
After it will look like this

x=12

8 0

2 years ago

Read 2 more answers

5) What is the smallest number by which 1323 must be multiplied so that the product is a perfect

Westkost [7]

Answer:

the smallest number is 7

5 0

2 years ago

Is the circumference of all circles about 3 times greater than their diameters. and why?

stira [4]

Answer:

<h2>Yes the circumference is about times greater than their diameters</h2>

Step-by-step explanation:

We will approach this problem by doing a check

Say the diameter of a circle is 4 cm

Hence the radius is 3 cm

We know that the circumference is $C=2\pi r$

$C=2*3.142*2= 12.57cm$

The circumference is about 3 time bigger than the diameter

Let us try another case say the diameter is 6 cm

The radius is 3 cm

$C=2*3.142*3= 18.85cm$

8 0

2 years ago

At Silver Gym, membership is $30 per month, and personal training sessions are $35 each. At Fit Factor, membership is $70 per mo

VladimirAG [237]

I’m not sure but i really really really like points!!!!

4 0

2 years ago

Simplify the following algebraic expression:<br> 4+3 [6z - 5(6 +2z)]

Tatiana [17]

$\huge\text{Hey there!}$

$\huge\text{4+3 [6z - 5(6 +2z)]}$

$\huge\text{4+(3)(6z)+(3)(-5(6+2z))}\\\\\rightarrow\huge\text{4+18z+(-30z)+(-90)}$

$\huge\text{\bf{Combine the like terms if you have any.}}$

$\huge\text{Like term \#1: 10z \& -30z}\\\\\\\huge\text{Like term \#2: 4 \& -90}$

$\huge\text{18z + (-30z) + (4 + (-90))}$

$\huge\text{18z + (-30z) = -12z}\\\\\\\huge\text{4 + (-90) = -86}$

$\boxed{\boxed{\huge\text{Answer: -12z + (-86)}}}\huge\checkmark$

$\text{Good luck on your assignment and enjoy your day!}$

~ $\frak{LoveYourselfFirst:)}$

5 0

2 years ago

Read 2 more answers