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3 years ago

Sandra tiles 5/4 square yards in 1/3 hour

Mathematics

1 answer:

jolli1 [7]3 years ago

6 0

Sandra lays 3.75 tiles in one hour

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Please solve and explain how you got the answer

Nesterboy [21]

500 X 6 = 3000, then 6 X 1.6 = 9.6, so the answer is A, -9.6

6 0

3 years ago

Select the correct answer.

Liono4ka [1.6K]

Answer:

Option C.

Step-by-step explanation:

It is given that,

Total number of applicants = 9

Number of job = 3

We need to select 3 applicants out of 9. So, the required number of ways is

$^9P_3=\dfrac{9!}{(9-3)!}$

$^9P_3=\dfrac{9\times 8\times 7\times 6!}{6!}$

$^9P_3=9\times 8\times 7$

$^9P_3=504$

Therefore, there are $^9P_3=504$ ways the positions can be filled because the order in which the applicants are chosen matters.

Hence, the correct option is C.

4 0

3 years ago

Paige had $20 to spend on 6 pieces of candy. After buying the candy, she has $6.50 left. How much was each piece of candy?

irga5000 [103]

Answer:

$2.25

Step-by-step explanation:

1. 20-6.50= 13.50

2. 13.50/6(pieces of candy) = $2.25

8 0

3 years ago

Q8 Q3.) Solve the system by the substitution method.

inn [45]

Recall that $(x+y)^2=x^2+2xy+y^2$ . So we can add twice the first equation to the second one to get

$x^2+y^2+2xy=10+2\cdot3\iff(x+y)^2=16\implies x+y=\pm4$

Since $xy=3$ , we have $y=\dfrac3x$ $(x\neq0)$ so

$x+y=x+\dfrac3x=\pm4\implies x^2\mp4x+3=0$

If $x+y=4$ , then

$x^2-4x+3=(x-3)(x-1)=0\implies x=3,x=1\implies y=1,y=3$

If $x+y=-4$ , then

$x^2+4x+3=(x+1)(x+3)=0\implies x=-1,x=-3\implies y=-3,y=-1$

So the solution set is

$(x,y)\in\{(-3,1),(1,3),(-1,-3),(-3,-1)\}$

3 0

3 years ago

Whats the correct answer answer asap

natima [27]

The environmental threat in Japan and Korea that threatens food security is: B. soil erosion.

<h3>What is Soil Erosion?</h3>

Soil erosion can be defined as the washing away of the top soil that supports plants growth and also contains vital nutrients for plants growth.

Crops are grown majorly on land. The disruption of soil nutrients by soil erosion poses a serious environmental threat to food security in both Japan and Korea. Therefore, the answer is: B. soil erosion.

Learn more about soil erosion on:

brainly.com/question/17905503

#SPJ1

5 0

2 years ago