1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Grace [21]
3 years ago
10

Double fact you can use to find the sum

Mathematics
1 answer:
Mariulka [41]3 years ago
6 0
4+4 is 8 so 4+5 is 9.So the strategy is a double +1. That is the strategy.
You might be interested in
How to solve -4{1-2x}-1=7x
mina [271]

Answer:

<h2>x = 5</h2>

Step-by-step explanation:

-4(1-2x)-1=7x\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\(-4)(1)+(-4)(-2x)-1=7x\\\\-4+8x-1=7x\qquad\text{combine like terms}\\\\8x+(-4-1)=7x\\\\8x-5=7x\qquad\text{add 5 to both sides}\\\\8x-5+5=7x+5\\\\8x=7x+5\qquad\text{subtract}\ 7x\ \text{from both sides}\\\\8x-7x=7x-7x+5\\\\x=5

7 0
3 years ago
Read 2 more answers
3x² + 24 + 45=0<br> quadratic form
mylen [45]

Answer:

x = {3, 5}

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the answer to ten sevens subtracting two sevens
eduard
That would be 8/7 or 1 1/7. Hope this helps! :)
5 0
3 years ago
Read 2 more answers
What is the axis of symmetry of the function f(x)=(x+5)(x-3)
podryga [215]

The axis of symmetry is X= -0.9999995

4 0
3 years ago
In ΔXYZ, ∠Y=90° and ∠X=24°. ∠ZWY=81° and XW=7.1. Find the length of WY to the nearest 10th.
Brums [2.3K]

Answer:

0.5

Step-by-step explanation:

delta math

4 0
2 years ago
Other questions:
  • Helen had 25 containers. Each container held 7 and a half cups of sauce. How much sauce ,in cups, did Helen have in total?
    5·2 answers
  • You roll a 6 sided die. What is P(roll great her than 4)? If necessary round your answer to 2 decimal place
    12·1 answer
  • Solve (y/-6)+5=9<br> Help please!! Very stuck.
    10·1 answer
  • Please help me!! Will give first and correct answer brainliest!!!
    8·1 answer
  • Angle is in standard position, if sin(0) = -1, and A&lt;$&lt; 3,4, find cos(O).<br> Why?
    13·2 answers
  • What is the slope of a line parallel to the line whose equation is x-3y=-27 Fully reduce your answer​
    8·1 answer
  • Pleaseee helpp don’t understand!!
    7·1 answer
  • Solve the system of linear equations by substitution. <br> x + 4y = 6 <br> x - y = 1
    9·1 answer
  • The product of 4 integers is odd, is there sum even or odd
    12·1 answer
  • Write each sentence as an equation.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!