It is given in the question that
Ann, Chang, and Kareem sent a total of 89 text messages over their cell phones during the weekend. Ann sent 9 fewer messages than Chang. Kareem sent 3 times as many messages as Ann.
Let number of messages Chang sent be x. And Ann sent 9 fewer than Chang, so Ann sent (x-9) messages. And Kareem sent 3 times as many messages as Ann, so Kareem sent 3(x-9) messages.
And the total messages are 89. That is

Combining like terms

So Chang sent 25 messages, Ann sent

And Kareem sent

Answer:
C, Length = 39.4 cm; width = 7.9 cm
Step-by-step explanation:
The permimeter of a rectangle is 2 times the width + 2 times the length or 2(l + w)
The length is 4 times w plus 7.8.
So: 2w+2(4w+7.8)=94.6
= 2w+8w+15.6=94.6 (Factor out the brackets)
= 10w+15.6=94.6 (Combine like terms)
= 10w=79 (Subtract 15.6 from both sides)
= w=7.9 (Divide both by 10).
So, the width is 7.9 cm and the length is 39.4 cm (4 * 7.9 + 7.8)
Answer:
<h2>
a = 2 and b = 6.</h2>
Step-by-step explanation:
The equation is given by
.
The given equation is a one degree polynomial, hence it has only one solution whatever the value of a and b will be.
If the value of a is 10, then the solution of the equation will be undefined.
Hence, a is any real number rather than 10.
As for example, a = 2 and b = 6.
Answer:
3
Step-by-step explanation:
0.75 out of 1 for 4 is 3
for 4
0.25 is 1
0.5 is 2
0.75 is 3
1 is 4
4/0.65 = 2.15 (not 100% on this one)