Answer:
4
Step-by-step explanation:
The equation is 2(10+x)=28 where x is the unknown number we are trying to find. Use distrubutive property to combine like terms. 2 times 10 is 20 and 2 times x is 2x. Now we have 20+2x = 28. What you do to one side you must do to the other. 20 minus 20 is 0. 28 minus 20 is 8. Now our equation is 2x is 8. To find 1 x we divided in half. 8/2 is 4 therefore the missing variable is 4.
Answer:
2+1+4=7
Step-by-step explanation:
Just break apart your number.
since we are using (7), I just took a bit away from it.
so, 7-2=5
then, i broke apart 5 into 2 pieces.
5-4=1
so, 4, 1, and 2 work for this problem
<span>y = x^2 +2x - 35</span>
x-intercept y=0
0 = <span>x^2 +2x - 35
</span>0 = <span>x^2 -5x + 7x - 35 //factoring with leading coefficient
</span>0 = x(x-5) + 7(x-5)
0 = (x+7)(x-5)
x=-7 or x=5
answer: C. -7 and 5
Answer:
Step-by-step explanation:
distributive property
-8 + 2x = 12x - 3
add 3 to both sides
-5 + 2x = 12x
subtract 2x from both sides
-5 = 10x
divide by 10 for both sides
-5/10 = x
-0.5 = x
Answer:78
Step-by-step explanation:
Did it
