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3 years ago

You are wanting to improve your grade in a future class. Your goal is to have at least an 80% in this class.

Mathematics

1 answer:

yan [13]3 years ago

3 0

Answer:

Yes,

You need 88 points.

Step-by-step explanation:

What you need to do here is to set up an equation using algebra (I do this in my master's degree to determine my grade).

$\frac{x}{.80}$ = 400

x = 320

Your target required points is 320.

320 - 232 = 88 points.

You need 88 points on the exam to get the 80%.

You might be interested in

a) Sundar bought two calculators for Rs. 1000. He sold one of them at a profit of 10% and other at a loss of 10%. If the selling

Katena32 [7]

Answer:

600

400

Step-by-step explanation:

1000 : 2 = 500

500 : 100 = 5 × 10 = 100

500 + 100 = 600

500 - 100 = 400

3 0

3 years ago

If the cos of angle x is 5 over 8 and the triangle is dilated to be three times as big as the original, what would be the value

Taya2010 [7]

Given :cos x = 5/8

we know that,
<span>in a dilatation the angles do not change
</span>
example
in a right triangle

cos x = Adjacent side angle x/Hypotenuse
So,
When the triangle is dilated by 3
the adjacent side will be dilated to 15 and the Hypotenuse will be dilated to 24
which means 5/8 will become 15/24
and hence,
15/24 after simplifying will be 5/8.
Thus there is no change

the answer is the option
5/8

6 0

3 years ago

Point (0, 6) lies on the

Igoryamba

The answer is the y axis

6 0

3 years ago

Read 2 more answers

*WILL MARK BRAINLIEST*

tankabanditka [31]

Answer: Charges for a hardcover book is $6 and Charges for a paperback book is $4

Step-by-step explanation:

1) This problems belongs to linear equation in two variables. From this problem , we can say that we required a pair of linear equation to solve linear equation in two variables.

2) lets create equation

let the charges for a hardcover book is represented by variable x

let the charges for a paperback book is represented by variable y

Creating equation related to Adams work

Adam sold 4 hardcover books and 10 paperback books .

So Adams earning = (4 × x ) + ( 10 × y)

⇒ 4x + 10y = 64 ------equation 1 [ given earning of Adam = 64 ]

Creating equation related to Barb work

Barb sold 5 hardcover books and 7 paperbacks for the same prices each

so Barb's earning = (5 × x ) + ( 7 × y)

⇒ 5x + 7y = 58 -------equation 2 [ given earning of Barb = 58 ]

so two equations are

4x + 10y = 64 ------equation 1 And

5x + 7y = 58 ------equation2

where variable x represents charges for a hardcover book and variable y represents charges for paperback books

3) lets solve two equation derived in step 2

4x + 10y = 64 ------equation 1 And

5x + 7y = 58 ------equation2

On multiplying equation 1 by 5 and equation 2 by 4 to make coefficient of variable x same.

5 × ( 4x + 10y = 64 )

= 20 x + 50 y = 320 ---------------equation 3

4 × ( 5x + 7y = 58 )

= 20x + 28y = 232 ----------------equation 4

subtracting equation 3 from equation 4 we get

20x - 20x +50y - 28y = 320 - 232

⇒ 22y = 88

⇒ y = 88/22 = 4

On substituting value of y in equation 1 , we get

4x + 10× 4 = 64

⇒ 4x = 64 - 40 = 24

⇒ x = 24/4 = 6

Hence charges for a hardcover book = x = $6

And charges for a paperback book = y = $4

7 0

3 years ago

1.6i+3/4d-3(1/2i-1.1d)-4.2

Scrat [10]

Answer:

4.05d+0.1i−4.2

Step-by-step explanation:

Let's simplify step-by-step.

1.6i+ 3/ 4 d−3( 1 /2 i−1.1d)−4.2

Distribute:

=1.6i+ 3/ 4 d+(−3)( 1/ 2 i)+(−3)(−1.1d)+−4.2

=1.6i+ 3/ 4 d+ −3/ 2 i+3.3d+−4.2

Combine Like Terms:

=1.6i+ 3/ 4 d+ −3/ 2 i+3.3d+−4.2

=( 3/ 4 d+3.3d)+(1.6i+ −3/ 2 i)+(−4.2)

=4.05d+0.1i+−4.2

Hope it helped!

3 0

3 years ago