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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Certain items are purchased jointly. If each person pays 8coins, the surplus is 3coins, and if each person gives 7coins, the def

kicyunya [14]

Answer:

7 people
53 coins

Step-by-step explanation:

The problem statement tells us ...

8x = y +3

7x = y -4

Subtracting the second equation from the first gives ...

x = 7

Then ...

y = 7x +4 = 7·7 +4 = 53

There are 7 people, and 53 coins are required for purchase.

4 0

3 years ago

Read 2 more answers

Write an inequality that best matches this description

Citrus2011 [14]

Answer:

$x \geq 3(y + z)$

Step-by-step explanation:

I am going to say that:

Mary's amount is x.

Ashley's amount is y.

Oscar's amount is z.

Mary has at least 3 times the amount of cash that ashley and oscar have combined

Ashley's and Oscar's combined amount is y + z.

3 times this amount is 3(y + z).

At least 3 times means that z is equal or greater than 3(y + z).

$x \geq 3(y + z)$

5 0

3 years ago

If c=25 and B=75 degrees, find a. Round to the nearest tenth.

worty [1.4K]

Answer:

a=6.9

Step-by-step explanation:

Since you know that C is a right angle, you can use the Law of Sines to find a. The first step is to find the size of the angle A, which is 180-74-90=16. Now, you set up a ratio that involves 3 knowns and one unknown to get $\frac{\sin(90^\circ)}{25} = \frac{\sin(16^\circ)}{a}$ , which after cross multiplying yields $a=\sin(16^\circ)\cdot25\approx 6.9$ . PM me if you have any questions?