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3 years ago

HELP I WILL GIVE BRAINIEST

Mathematics

1 answer:

ZanzabumX [31]3 years ago

5 0

Answer:

Step-by-step explanation:

you add 45 55 the take the answer that u got for adding 45 55 then take away from 180 45+55=100 180-100=80

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A.0 b.1 c.2 d.3 help please

Vikki [24]

Answer:

The answer is 2.

4 0

3 years ago

y = 2x squared + 5x -3 can be written in the form y= 2( x+a) squared + b . Find the value of a and the value of b.

Elan Coil [88]

General vertex form:

$y = m(x − a)² + b \: with \: vertex \: at \: (a, b)$

Given :

$y = 2x² + 5x - 3$

Extract "spread factor" m

$y = 2( x² + \frac{5}{2} x) - 3$

Complete the square

$y = 2(x² + \frac{5}{2}x + ( \frac{5}{4})²) - 3$

$- 2( \frac{5}{4})²$

Write as a squared binomial and simplify the constant

$y = 2(x + \frac{5}{4})² - 6 \frac{1}{8}$

Re-write to match signs of standard general form:

$y = 2(x - ( - \frac{5}{4}))² \: + ( - 6 \frac{1}{8})$

3 0

2 years ago

4. Anna, Beate and Cindy buy a bag of 30 biscuits together. They get 10 biscuits each. But Anna has paid 80 cents, Beate 50 cent

erma4kov [3.2K]

Answer:

Option E. 6.

Step-by-step explanation:

80:50:20 or 8:5:2. 8 ÷ 15 * 30 = 16 = 16 - 10 = 6. This is the solution.

Option A. 30 + 10 = 40. Incorrect. The solution is unequal to this.
Option B. 30 + 9 = 39. Incorrect. The solution is unequal to this.
Option C. 30 + 8 = 38. Incorrect. The solution is unequal to this.
Option D. 30 + 7 = 37. Incorrect. The solution is unequal to this.
Option E. 30 + 6 = 36. Correct. The solution equals this answer.

Option E will be the answer.

6 0

2 years ago

If 5(3x-7)=20, then what is 6x-8 ?

Colt1911 [192]

First solve for x in the first equation. So you'll have to substitute,
5(3x-7)=20
15x-35=20
Then add 35 to both sides.
15x=55
Divide 55 by 15.
So x = 3.66...
Then plug in 3.7 for x in 6x-8
6(3.7)-8
Its approximately 14.2

3 0

3 years ago

Look at this system of equations. How can the system be changed so that the two equations have equal x-coefficients?

Volgvan

I believe the correct answer from the choices listed above is option A. The system can be changed so that the two equations have equal x-coefficients by multiplying both sides of the top equation by 2 resulting to 6x + 4y = 24. Hope this answers the question.

5 0

3 years ago