3 years ago

Reading is what grammar element

Mathematics

1 answer:

emmasim [6.3K]3 years ago

7 0

Story Grammar Element

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A rectangular red sticker has a perimeter of 12 millimeters and an area of 8 square millimeters. What are the dimensions of the

bekas [8.4K]

Answer: 9" by 7"

Step-by-step explanation:

let the dimensions of the rectangle be x and y

equation 1: xy=63

equation 2: 2(x+y)=32

first, rearrange the terms

(1′): y=63/x

(2′): y=16−x

(1′)-(2′): 0=63/x−16+x

multiply the equation by x

0=x2−16x+63

0=(x−9)(x−7)

so x = 7 or x = 9

from this, y = 9 when x = 7 and y = 7 when x = 9

so, the dimension of the rectangle is 9″ by 7″

7 0

2 years ago

For the second quarter of 2015, Apple sold 61.0 million iPhones. This represented a year- over-year increase of 40%. What were t

Anastaziya [24]

Answer:

It sold 43.57 iPhones for the same quarter in the previous year.

Step-by-step explanation:

It sold 61.0 million iPhone, which is an increase of 40% over the value of the previous year x.

This can be interpreted as:

61 million is 140% = 1.4 of the previous year amount, that is, x. So

$1.4x = 61$

$x = \frac{61}{1.4}$

$x = 43.57$

It sold 43.57 iPhones for the same quarter in the previous year.

4 0

3 years ago

I’ve been trying on this question but in struggling. please help me

snow_lady [41]

Answer:

$x \geq 15$

Step-by-step explanation:

Solving an inequality is very similar to solving an equation, one uses inverse operations. The only major difference between the two is that when one multiplies or divides an inequality by a negative number, one must remember to flip the inequality sign to ensure that the inequality remains true. In this situation, such a rule does not come into play.

$\frac{x}{5} - 8 \geq -5$

Inverse operations,

$\frac{x}{5}-8 \geq -5\\ +8\\\\\frac{x}{5} \geq 3\\*5\\\\x \geq 15$

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3 years ago

100 points!!!!!!!! A box contains 8 rings, 10 necklaces, and 4 pins. If Anya selects 1 piece at random, does NOT replace it, and

Aliun [14]

Answer:

2/25

Step-by-step explanation:

7 0

3 years ago

Denise buys a tote bag at a gift shop for $12. The same bag is available at Denise’s pharmacy for 2/3 the price she paid at the

liq [111]

It would be 15 because 2/3 of $12 is $8. she has enough money to buy 10 bags from the gift shop which means she has $120. at the pharmacy, $120 would buy her 15 bags.

8 0

3 years ago

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