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kvv77 [185]
2 years ago
11

It cost Allison $5.80 to send 58 text messages. How much would it cost to send 40 text messages?

Mathematics
1 answer:
Vitek1552 [10]2 years ago
3 0

Answer:

4$

Step-by-step explanation:
The ratio between the $5.80 spent for 58 text messages is $0.10. This means that each text message sent is $0.10. So you just multiply $0.10 and 40 text messages to find that it costs $4 to send 40 messages.

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A triangle has side lengths of 15 10 and 7 is it a right triangle
lions [1.4K]

Answer:

No, it is not a right triangle.

Step-by-step explanation:

Given:

The sides of the triangle =  15 10 and 7

To Find:

Whether the triangle is a right triangle = ?

Solution:

According to Pythagorean theorem , In an right triangle the the sum of the squares of the two smaller sides must equal to the square of the larger side

a^2 +b^2 =c^2\\

where

a and b are the smaller sides

c is the larger side

Now from the given data, lets assume

a = 10 and b =7 and c =15

Substituting in the above equation we get,

(10)^2 +(7)^2 = (15)^2

100 + 49 = 225

149 = 225

149 \neq 225

So, the given triangle is not a right triangle.

7 0
3 years ago
Find the constant of variation k for the inverse variation. Then write an equation for the inverse variation. Y=4.5 when x = 3
Nookie1986 [14]
\bf \qquad \qquad \textit{inverse proportional variation}\\\\
\textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad  y=\cfrac{k}{x}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=4.5\\
x=3
\end{cases}\implies 4.5=\cfrac{k}{3}\implies 4.5(3)=k
\\\\\\
13.5=k\qquad therefore\qquad \boxed{y=\cfrac{13.5}{x}}
8 0
2 years ago
Please help I’ll give brainliest!!
natta225 [31]

Answer:

hi

Step-by-step explanation:

8 0
3 years ago
Which of the following best describes the expression 7(y + 5)?
damaskus [11]

Answer: LAST OPTION.

Step-by-step explanation:

To solve this exercise is important to remember the following definitions:

  1. The sum is the result obtained when we solve an addition.
  2. The product is the result obtained when we solve a mutiplication.
  3. Given a multiplication (a)(b)=c, "a" and "b" are factors and "c" is the product.

In this case, you have this expression:

7(y + 5)

Notice that the there is an addition of two terms (y and 5) inside the parentheses.

Outside the parentheses you can notice that the number 7 is multiplying the sum of the terms  mentioned before.

Therefore, you can conclude that the best description for this expression is:

<em>The product of a constant factor of seven and a factor with the sum of two terms.</em>

4 0
3 years ago
Graph the line with slope -1/3 and y -intercept 6 .
kirill115 [55]

Answer:

plot a point at 6 up from (0,0) and then go down one and over three places then plot another point- and so on - and so on

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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