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serg [7]
3 years ago
9

Does somene know easy if u know it

Mathematics
2 answers:
Levart [38]3 years ago
8 0

Answer:

valid

Step-by-step explanation:

because area of a square if found by A=a^2

(this can also be length times height since a square has all 4 equal sides)

3*3=9

Nookie1986 [14]3 years ago
4 0

Answer:

valid bc in a square all the sides are the same.

Step-by-step explanation:

so side 1 and side 2 both equal 3. 3×3=9

so the answer is valid

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Tammy brought 3 apps for $2.40. At the same price, how much would 10 apps cost​
vitfil [10]

Answer:

The answer is $8.00.

Step-by-step explanation:

First, you have to find how much for each app so you have to divide by 3 :

3 apps = $2.40

1 app = $2.40 ÷ 3

1 app = $0.80

Next, you have to multiply it by 10 :

1 app = $0.80

10 apps = $0.80 × 10

10 apps = $8.00

3 0
3 years ago
A shop sells DVDs and CDs.
Vsevolod [243]

Answer:

Step-by-step explanation:

Lets Price of a DVD is fixed i.e. 15

and One CD price is 5 (Not fixed)

In First situation

2 DVDs and 1 CD cost = 35 as given

2 x 15 + 5 = 35

Lets one CD price is 7.5

In Second situation

2 x 15 + 2 x 7.5 = 45

Its mean CD price may be between 5 to 7.5

In asked scenario, Martin has 50

1 DVD and 3 CDs?

1 x 15 + 3 x 7.5 = 37.5

37.5 is lesser than 50

Hence Martin has enough to buy 1 DVD and 3 CDs.

3 0
3 years ago
What is the value of sec theta given the diagram below?
marishachu [46]

Answer:

\sec \theta=-\sqrt{5}

Step-by-step explanation:

The hypotenuse is h^2=6^2+3^2

h^2=36+9

h^2=45

h=\sqrt{45}

h=3\sqrt{5}

The terminal side of \theta is in the second quadrant.

In this quadrant; the secant ratio is negative.

\sec \theta=-\frac{hypotenuse}{adjacent}

\sec \theta=-\frac{3\sqrt{5}}{3}

\sec \theta=-\sqrt{5}

6 0
4 years ago
Read 2 more answers
Filipe is buying materials for making his new comic books. He purchases a notebook for $7
Vikki [24]

Answer:$0.36

Step-by-step explanation:

0.42 devided by 7= 0.06

0.06 times 6= 0.36

3 0
3 years ago
Read 2 more answers
A number decreased by fifteen is less than two.
Aliun [14]

Let us assume number of n.

The number is decreased by 15.

Decreasing by 15 means, we need to subtract 15 from that number.

So, it would be come n-15.

Now, it is said that the number would become less than 2.

So, we need to setup an inequality:

n-15 is less than 2.

<h3>n-15 < 2  : required inequality .</h3>

Adding 15 on both sides, we get

n-15+15 < 2+15

n < 17.

<h3>So, we could say the number would be less than 17.</h3>
3 0
3 years ago
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