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sergeinik [125]

3 years ago

10

Christa is saving for a new tablet. It costs $80. She has already saved $25. How much more does she need to save? One step equat

ion the variable is X

1 answer:

Gekata [30.6K]3 years ago

4 0

Answer:55

Step-by-step explanation:

80-25=55

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AC=36cm, and BC=27cm. Verify that DE\\AB.

emmasim [6.3K]

Answer:

$\overline {DE} \parallel \overline{AB}$ because $\frac{EC}{DC} = \frac{AC}{BC}$ .

Step-by-step explanation:

According to the Theorem of Thales and definition of proportionality, $\overline {DE} \parallel \overline{AB}$ if and only if $\frac{EC}{DC} = \frac{AC}{BC}$ . If we know that $EC = 15\,cm$ , $DC = 20\,cm$ , $BC = 36\,cm$ and $AC = 27\,cm$ , then we have the following result:

$\frac{15\,cm}{20\,cm} = \frac{27\,cm}{36\,cm}$

$\frac{3}{4} = \frac{3}{4}$

Hence, $\overline {DE} \parallel \overline{AB}$ .

4 0

3 years ago

Harry liked to collect old movies. On 4 different days, he bought 2 movies. On 2 other days, he bought 3 movies each day. After

neonofarm [45]

Answer:

Harry put 5 movies on each shelf.

Step-by-step explanation:

The information provided is:

On 4 different days, he bought 2 movies.
On 2 other days, he bought 3 movies each day.
After that he sold 2 sets of 2 movies.
He divided the remaining into 2 groups to put onto his shelves.

So, first Harry bought 2 movies on four different days.

That is, a total of 8 movies.

Then, he bought 3 movies on two other days.

That is, a total of 6 movies.

So, in total Harry bought 14 movies.

Now, he sold 2 sets of 2 movies.

That is, he sold 4 movies.

He has 14 - 4 = 10 remaining movies with him.

It is provided that he divided remaining movies into 2 groups to put onto his shelves.

So, he put 10/2 = 5 movies on each shelf.

8 0

4 years ago

What is the value of x? Enter your answer in the box.

Archy [21]

Explanation

The sum of the three angles of a triangle has to be equal to 180 degrees.

So...
180-(75+50)
180-125
=55 degrees

X equals 55 degrees

8 0

3 years ago

How many 6 1/4 inch pieces of fabric can be cut from a 70 inch roll?

kvasek [131]

Answer:

11.2 is the answer because 70 divided by 6 1/4 is 11.2

5 0

3 years ago

A(-3, 9) and B(5, 9) are the endpoints of the diameter of a circle. Use these points to find the standard equation of the circle

aksik [14]

Check the picture below.

notice the midpoint of the diameter segment, is just 1,9.

also, recall the radius is half the diameter, notice how long the radius is, just 4 units.

$\bf \textit{equation of a circle}\\\\ 
(x-{{ h}})^2+(y-{{ k}})^2={{ r}}^2
\qquad 
\begin{array}{lllll}
center\ (&{{ h}},&{{ k}})\qquad 
radius=&{{ r}}\\
&1&9&4
\end{array}$

7 0

4 years ago