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3 years ago

Help me in this question I don't know if it's either 14 or 15, write your answers.

Mathematics

1 answer:

Lorico [155]3 years ago

6 0

Answer: 14

Step-by-step explanation:

2 and 3/4 = 11/4

11/4 x 4 = 44/16

44/3 is equal to about 14

So, it would be 14 whole dumplings. Not 15.

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Your family of four has a 6 GB data limit each month. You use twice as much data as your sister, half as much data as your fathe

Svetllana [295]

Let your monthly data use be represented by X
Then:
- Your sister's use is 1/2X (half of your usage)
- Your father's use is 2X (twice as much as you)
- Your mother's use is 4X (four times as much as you)

The total amount of GB use in your family can therefore be represented by
$\frac{1}{2} x + x + 2x + 4x = 7 \frac{1}{2} x$
This total GB use equals the limit of 6GB per month, so
$7 \frac{1}{2}x = 6$
Divide by 7.5
$x = 0.8$

Hence, you use 0.8 GB per month
- Your sister's use is 1/2 * 0.8 = 0.4GB (half of your usage)
- Your father's use is 2 * 0.8 = 1.6GB (twice as much as you)
- Your mother's use is 4 * 0.8 = 3.2GB (four times as much as you)

7 0

3 years ago

Jestina has A apples, she gave 5 to her sister, enter an expression to represent the number of apples jestina has now!! (show wo

AnnZ [28]

Answer: A-5

Step-by-step explanation:

Jestina has A apples

she gave 5 away

so she has 5 fewer apples than she had before

so A-5 is the amount of apples she has now

3 0

3 years ago

Answer please I’m dying from math

charle [14.2K]

Answer:

$\huge\boxed{\text{D)} \ 15x^4 + 2x^3 - 8x^2 - 22x - 15}$

Step-by-step explanation:

We can solve this multiplication of polynomials by understanding how to multiply these large terms.

To multiply two polynomials together, we must multiply each term by each term in the other polynomial. Each term should be multiplied by another one until it's multiplied by all of the terms in the other expression.

We can do this by focusing on one term in the first polynomial and multiplying it by all the terms in the second polynomial. We'd then repeat this for the remaining terms in the second polynomial.

Let's first start by multiplying the first term of the first polynomial, $3x^2$ , by all of the terms in the second polynomial. ( $5x^2+4x+5$ )

$3x^2 \cdot 5x^2 = 15x^4$
$3x^2 \cdot 4x = 12x^3$
$3x^2 \cdot 5 = 15x^2$

Now, we can add up all these expressions to get the first part of our polynomial. Ordering by exponent, our expression is now

$\displaystyle 15x^4 + 12x^3 + 15x^2$

Now let's do the same with the second term ( $-2x$ ) and the third term ( $-3$ ).

$-2x \cdot 5x^2 = -10x^3$
$-2x \cdot 4x = -8x^2$
$-2x \cdot 5 = -10x$

Adding on to our original expression: $\displaystyle 15x^4 + 12x^3 - 10x^3 + 15x^2 - 8x^2 - 10x$

$-3 \cdot 5x^2 = -15x^2$
$-3 \cdot 4x = -12x$
$-3 \cdot 5 = -15$

Adding on to our original expression: $\displaystyle 15x^4 + 12x^3 - 10x^3 + 15x^2 - 8x^2 - 15x^2 - 10x - 12x - 15$

Phew, that's one big polynomial! We can simplify it by combining like terms. We can combine terms that share the same exponent and combine them via their coefficients.