Answer:
Step-by-step explanation:
she wrote it to solve the total amount spent on both T shirt.
30+6x=20+8x-8x
30+6x-8x=20
30-30-2x=20
-2x=20-30
-2x/-2=-10/-2
<u>x=5</u>
Yes it’s right for this problem
Look at the coefficient of x², ignore the positive or negative sign. The larger the coefficient, the narrower the graph.
in this case, the coefficients are -2, -1/2, -4, and 1/7
ignore the positive or negative sign, 4 is the largest number, so y=-4x² is the narrowest.
Note: the positive/negative sign tells you whether the graph opens upward or downward. It doesn't determine the width of the graph.
Answer:
8. 14 for the third question.
9. 18 for the forth question.
Step-by-step explanation:
the third and forth orange equations.
