MATHEMATICS HIGH SCHOOL

What should be done to solve the following equation? d-8=9
A. Subtract 8 from both sides
B. Add 8 to both sides
C. add 9
D. subtract 9 from both sides

Answers

Answer 1
Answer: B. Add 8 to both sides

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there are only 7 days left until the launch of our new product and we only have 668.00 left in our promotion budget .we need to spend 85.00 on the last day .can you please calculate how many dollars a day we can spend on the remaining days?

Answers

In total, you have $668.00.
To reserve enough for the last day, you need to subtract the last day's budget:
668.00-85.00=583.00
This means that, for the remaining 6 days in the week, you have $583.00. 
Assuming an equal amount is being spent each day, you can calculate the daily budget by dividing the remaining total by the number of days left. 
(583)/(6) =97.16
To avoid going over budget, you can spend $97.16 per day for the other six days.

Hope this helps!
668-85=583
583/6=97.1666
He can spend 97.16 on the remaining days.

Use proportional reasoning to find 65% of 200

Answers

(200)/(1)*(65)/(100)=130

Joe drives 20 mi-in 1/2 h. how Long Will it take him to derive 50 mi?

Answers

An hour and 15 minutes.  Since Joe is driving 20 miles per 1/2 hour that means he is driving 40 miles every hour. We still have 10 miles left and since 20 divided by 2 is ten you would simply cut the time it takes him to drive 20 miles in half making 15 minutes. Then you add the time it takes to drive 40 miles and 10 miles and that's how you get an hour and 15 minutes. Hope this made sense!

Prove that

(1 + cot A + tan A) (sin A - cos A) = sin A tan A - cot A cos A

Answers

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identities

tan A = (sinA)/(cosA) , cot A = (cosA)/(sinA)

Consider the left side

(1 + cotA + tanA)(sinA - cosA)

each term in the second factor is multiplied by each term in the first factor.

1(sinA - cosA) + cotA(sinA - cosA) + tanA(sinA - cosA)

= sinA - cosA + cosA - (cos^2A)/(sinA) + (sin^2A)/(cosA) - sinA ( collect like terms )

= (sin^2A)/(cosA) - (cos^2A)/(sinA)

= ( sinA × (sinA)/(cosA) ) - ((cosA)/(sinA) × cosA )

= sinAtanA - cotAcosA

= right side ⇒ proven

How many people preferred WCLM

Answers

96 people preferred WCLM
96 people prefer wclm

Find the value of x RT=4x+10 SW= 5x-20

Answers

Well, as you can see from the rectangle RT and SW should have equal lengths. So to find the value of x, we need to do.....

4x + 10 = 5x - 20
-x + 10 = -20              (Subtraction property of equality)
-x = -30                      (Subtraction property of equality)
x = 30                        (Division property of equality)

To check our work:

4(30)+10 = 130
5(30)-20 = 130

So, the value of x is 30!
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1. Determine the constant of variation for the direct variation given.R varies directly with S. When S is 16, R is 80. 1/5 5 16
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8-9x-6-5x=4 can you please help me with this :)