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4 years ago

What two facts can you double to find 8 X 4 explain

Mathematics

1 answer:

aleksandr82 [10.1K]4 years ago

8 0

You could multiply again by 2 or long multiply by 2

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1 The ages of three cats are a, a + 4 and 2a - 3. Their total age is 21. Determine a. ?

Nimfa-mama [501]

Answer:

a = 5

Step-by-step explanation:

a +a+4 + 2a-3 = 21

4a +1 =21

4a = 20

a = 5

8 0

3 years ago

Rachel had 36 quarters. If it costs 4 quarters for each coke from a coke machine, how many could she buy?

sweet-ann [11.9K]

Answer:

9 cokes

Step-by-step explanation:

36 divide 4 = 9

4 0

3 years ago

En el triángulo rectángulo ABC (B= 90°) se tiene que: Sen A = 1/3.Calcula sen C

ELEN [110]

Hi,

Podemos afirmar que en el triángulo rectángulo ABC el Sen(C) viene siendo 0.94 y el Sen(A) viene siendo 1/3.

Explicación:

Tenemos un triángulo rectángulo donde se cumple que sen(A) = 1/3, veamos cuánto vale este ángulo:

A = arcsen(1/3)

A = 19.47º

Ahora, si es un triángulo rectángulo significa que tiene un ángulo recto y además la suma de los ángulos internos debe ser igual a 180º, entonces:

A + B + C = 180º

19.47 + 90 + C = 180º

C = 70.53º

Finalmente:

Sen(70.53º) = 0.94

Por tanto, podemos afirmar que en el triángulo rectángulo el Sen(C) viene siendo 0.94.

4 0

4 years ago

4. The length of Marshall’s rectangular poster is 2 times its width. If the perimeter is 24 inches, what is the area of the post

lubasha [3.4K]

The length is 7 with a width of 5, so the area is 35

3 0

4 years ago

A customer borrowed $2000 and then a further $1000 both repayable in 12 months. What should he have saved if he had taken out on

Neporo4naja [7]

Answer:

a. $60

Step-by-step explanation:

We will use simple interest formula to solve our given problem.

$A=P(1+rt)$ , where

A= Amount after t years.

P= Principal amount.

r= Interest rate in decimal form.

t= Time in years.

Let us find amount of loans repayable after 12 months for taking two amounts of $2000 and $1000.

As $2000 and $1000 are less than 2500, so the rate of loan will be 10%.

$10\%=\frac{10}{100}=0.10$

12 months = 1 year.

$A=2000(1+0.10\times 1)$

$A=2000(1+0.10)$

$A=2000(1.10)$

$A=2200$

Now let us find amount repayable after 12 months for borrowing $1000.

$A=1000(1+0.10\times 1)$

$A=1000(1+0.10)$

$A=1000(1.10)$

$A=1100$

Adding these amounts we will get total repayable amount after 12 months for borrowing $2000 and $1000 separately.

$\text{Amount repayable for borrowing two separate amounts}=2200+1100=3300$

Now let us find repayable amount after 12 months for taking 1 loan. As $3000 is between $2501 and $7500, so rate of loan will be 8%.

$8\%=\frac{8}{100}=0.08$

$A=3000(1+0.08\times 1)$

$A=3000(1+0.08)$

$A=3000(1.08)$

$A=3240$

Now let us find difference between both repayable loan amounts.

$\text{Difference between both repayable loan amounts}=3300-3240$

$\text{Difference between both repayable loan amounts}=60$

Therefore, the customer should have saved $60, if he had taken out one loan for $3000 and option a is the correct choice.

6 0

3 years ago

Read 2 more answers