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3 years ago

Is 25 – 4x = 15 – 3x + 10 – x and 4x + 8 = 2x + 7 + 2x - 20 a contradiction or identity?

Mathematics

1 answer:

SVEN [57.7K]3 years ago

3 0

Answer:

i am not clear about questions nicely

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What is the greatest common factor of 5 and 13?

frozen [14]

Answer:

Step-by-step explanation:

List out factors of 13

13: 1,13

List out factors of 5

5: 1,5

GCF = 1

If my answer is incorrect, pls correct me!

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-Chetan K

7 0

3 years ago

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A college student earned $7200 during summer vacation working as a waiter in a restaurant on the boardwalk at the beach. The stu

Agata [3.3K]

Answer: The amount invested at 10% was $3200.

Step-by-step explanation:

Since we have given that

Principal amount = $7200

Rate of interest are 10% and 9%.

Total interest = $680

Let the amount invested on 10% be 'x'.

Let the amount invested on 9% be '7200-x'.

According to question, we get that

$\dfrac{x\times 10}{100}+\dfrac{(7200-x)\times 9}{100}=680\\\\10x+64800-9x=680\times 100\\\\x+64800=68000\\\\x=68000-64800\\\\x=\$3200$

Hence, the amount invested at 10% was $3200.

3 0

4 years ago

Highest common factor of 72 and 96

Likurg_2 [28]

Answer:

Step-by-step explanation:

Prime Factorise 72:

$72=2*36\\72=2*2*18\\72=2*2*2*9\\72=2*2*2*3*3\\\\72=2^3*3^2$

Prime factorise 96:

$96=2*48\\96=2*2*24\\96=2*2*2*12\\96=2*2*2*2*6\\96=2*2*2*2*2*3\\96=2^5*3$

Multiply the common factors of $2^3*3^2$ and $2^5*3$ :

$2^3*3=24$

4 0

4 years ago

5. What is the diagonal length of a TV Screen whose dimensions are 80 x 60? Draw a picture and solve,

Allushta [10]

Answer:

The diagonal length of a TV screen is 100 units

Step-by-step explanation:

we know that

Find the diagonal length of a TV screen, applying the Pythagoras Theorem

$d^{2}=80^{2}+60^{2}$

$d^{2}=6,400+3,600$

$d^{2}=10,000$

$d=100\ units$

The picture in the attached figure

8 0

3 years ago

Ben is decorating his home with vases of flowers. He bought glass vases that cost $22 each and ceramic vases that cost $14 each.

Ksivusya [100]

Number of glass vases bought = x

Number of ceramic vases = y

Ben bought no more than 10 vases in all.

So total number of vases can be represented as:

$x+y\leq10$

Cost of one glass vase = $22

Cost of x glass vases = 22x

Cost of one ceramic vase = $14

Cost of y ceramic vases = 14y

Total cost of vases is more than $172

So the equation for cost is:

$22x+14y\geq172$

Answer:

So the system of inequalities that can be used are:

$x+y\leq10$

$22x+14y\geq172$

5 0

3 years ago

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