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3 years ago

Hi can I please get some help please thank you please please I need it WILL MARK AS BRAINLIEST !!!

Mathematics

1 answer:

Harrizon [31]3 years ago

5 0

Answer: D

Step-by-step explanation:

A and C are linear equations therefore we can eliminate them.

We are left betwen C and D.

x²=25

x=5, x=-5

For C, we can eliminate because when you solve for x, you get 2 linear equations. You may see the x² and think it's linear, but when you solve it, you get 2 linear equations.

We are left with D. Even if you graph it and it doesn't look like a parabola or quadratic, it is still a quadratic equaiton. The 1/ makes it split both ways.

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Mr. Hamilton has 60,000 to invest in a tax-free fund and in a money market fund. The tax-free fund pays 7.5%, and the money mark

Valentin [98]

Answer:

He should invest $31,000 in tax-free to get a return of $4,790

Step-by-step explanation:

Let the amount he will invest in tax-free be $x while the amount in money market be $y

Adding both we have the total;

x + y = 60,000 ••••••••(i)

Then let’s work with the percentages;

7.5% of x + 8.5% of y = 4,790

7.5/100 * x + 8.5/100 * y = 4,790

7.5x/100 + 8.5y/100 = 4790

multiply through by 100

7.5x + 8.5y = 479000 ••••••(ii)

From i, y = 60,000 - x

Put this into ii

7.5x + 8.5(60,000-x) = 479000

7.5x + 510,000 -8.5x = 479000

8.5x - 7.5x = 510,000 - 479,000

x = $31,000

6 0

3 years ago

If each of three lines intersects a circle at two points, what is the greatest number of separate regions that can be formed?

jarptica [38.1K]

Answer:

Step-by-step explanation:

See the attached diagram with this answer.

If two straight lines cross a circle intersecting at two points then they can form a maximum of 4 regions within the circle, like the straight lines pq and rs form in circle c.

Now, another straight line mn is so placed that it forms the maximum number of separate regions in the circle.

Therefore, from the diagram, it is clear that there may be a maximum 7 separate regions formed by three straight lines intersecting the circle at two distinct points. (Answer)

6 0

3 years ago

White shapes and black shapes are used in a game. Some of the shapes are circles. All the other sahpes are squares.

seropon [69]

Answer:

9/32

Step-by-step explanation:

BC = black circle

BS = black square

WC = white circle

WS = white square

Given:

(WC + WS) / (BC + BS) = 5 / 11

WC / WS = 3 / 7

BC / BS = 3 / 8

Find: (BC + WC) / (BC + BS + WC + WS)

Solve for WC and BC in the last two equations, then substitute into the first:

WC = 3/7 WS

BC = 3/8 BS

WC + WS = 5/11 (BC + BS)

3/7 WS + WS = 5/11 (3/8 BS + BS)

10/7 WS = 5/8 BS

WS = 7/16 BS

Therefore:

WC = 3/7 WS

WC = 3/16 BS

Substitute:

(BC + WC) / (BC + BS + WC + WS)

(3/8 BS + 3/16 BS) / (3/8 BS + BS + 3/16 BS + 7/16 BS)

(9/16 BS) / (2 BS)

9/32

5 0

3 years ago

Please help me please

marishachu [46]

Answer:

that thing is not seeing properly and you can capture it again and resend it

4 0

3 years ago

how many calories burned in 1 hour of jumping jacks? If 10 minutes of jumping jacks is 100 calories burned?

astra-53 [7]

Answer:

600 calories

Step-by-step explanation:

60/10 = 6

6 x 100 = 600

3 0

3 years ago

Read 2 more answers