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3 years ago

The multiplication property of equality could be used to solve which of the following equations?

Mathematics

1 answer:

BARSIC [14]3 years ago

3 0

Answer:

( x+2)( x-3)=0

b ÷ (-2) = 18

Step-by-step explanation:

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Steph knows that two pens are about eight paper clips long. How can steph estimate the length of one pen

ivanzaharov [21]

Answer:

She could divide 8 by 2, thus providing the length of just ONE pen: about four paper clips long.

Step-by-step explanation:

5 0

4 years ago

The area of the pacific ocean is approximatley 6.4x10^7 square miles. The area of the gulf of mexico is approximately 10^5 squar

matrenka [14]

Answer:

640 times greater

Step-by-step explanation:

Given the following

area of the pacific ocean = 6.4x10^7 square miles

area of the gulf of mexico = 10^5 square miles

Taking the ratio of the distances

pacific ocean/gulf of mexico = 6.4x10^7/10^5

pacific ocean/gulf of mexico = 6.4 * 10^2

pacific ocean/gulf of mexico =640

pacific ocean = 640gulf of mexico

Hence the area of the pacific ocean us 640 times greater than the area of the gulf of mexico

8 0

3 years ago

How many 2-letter combinations can be created from the distinct letters in the word "mathematician"? Assume that the

Rzqust [24]

Answer:

Option A.

Step-by-step explanation:

The given word is "mathematician".

Here, total number of letter is 13 and

Number of distinct letters = 8

We need to select 2 distinct letters from word "mathematician".

It means we need to select 2 letters from 8 distinct letters.

Total ways $=^8C_2$

$=\dfrac{8!}{2!(8-2)!}$

$=\dfrac{8\times 7\times 6!}{2\times 6!}$

$=28$

Therefore, the correct option is A.

4 0

4 years ago

I NEED HELP.<br>Consider the figure below.<br>Find the value of x,y and z

Andrews [41]

Answer:

x= 7

y=9

z=90

Step-by-step explanation:

8x = (9x-7)

8x = 9x-7

8x - 9x= -7

-x= -7

<em>(multiply -1 to each side to make it positive)</em>

x= 7

(5y-11)+(9x-7)=90

5y-11+9(7)-7=90

5y-11+63-7=90

5y+63-18=90

5y+45=90

5y=90-45

5y=45

y=45÷5

y=9

(5y-11)+8x+z=180

5y-11+8x+z=180

5(9)-11+8(7)+z=180

45-11+56+z=180

34+56+z=180

90+z=180

z=180-90

z=90

7 0

3 years ago

Sheldon harvests the strawberries and tomatoes in his garden.

shtirl [24]

Answer:

A. 3 13/20

B.3.8 kg

C.Strawberries

Step-by-step explanation:

In order to solve this we just need to find the amount of strawberries he picked, and if he picked 1 2/5 less in the morning and in the morning he picked 2 1/4, we just add that up to know how much he picked in the afternoon:

$1\frac{2}{5}+ 2\frac{1}{4}\\1 \frac{2(4)}{20}+ 2\frac{1(5)}{20}\\1 \frac{8}{20}+ 2\frac{5}{20}\\\\3\frac{13}{20}$

So in the afternoon he picked $3\frac{13}{20}$ .

Now he picked 5 3/10 kg of tomatoes but 1.5 were rotten, we just have to withdraw the rotten from the total:

$5\frac{3}{10} -1\frac{1}{2} \\5\frac{3}{10} -1\frac{5}{10} \\4\frac{3-5}{10} \\3\frac{13-5}{10} \\3\frac{8}{10}$

So now we know that he picked $3\frac{8}{10}$ kg of good tomatoes.

If he picked in the afternoon and the morning 5.05 kg of strawberries, he picked more strawberries than tomatoes.

7 0

3 years ago