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3 years ago

30 POINTS HELP PLEASE

Mathematics

1 answer:

Reptile [31]3 years ago

8 0

Answer:

$\large\boxed{a=-3,\ b=-7\ and\ c=3}$

Step-by-step explanation:

$ax^2+bx+c=0$

We have:

$-3a^2=7a-3$ subtract 7a from both sides

$-3a^2-7a=7a-7a-3$

$-3a^2-7a=-3$ add 3 to both sides

$-3a^2-7a+3=-3+3\\\\-3a^2-7a+3=0\to a=-3,\ b=-7, c=3$

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Simplify: 5(6h – 1) – 5h A. h – 1 B. h – 5 C. 25h – 5 D. 35h – 5

aleksley [76]

It would be: 5(6h - 1) - 5h
= 30h - 5 - 5h
= 25h - 5

In short, Your Answer would be Option C

Hope this helps!

3 0

2 years ago

Read 2 more answers

alekssr [168]

The similarity ratio of ΔABC to ΔDEF = 2 : 1.

Solution:

The image attached below.

Given ΔABC to ΔDEF are similar.

To find the ratio of similarity triangle ABC and triangle DEF.

In ΔABC: AC = 4 and CB = 5

In ΔDEF: DF = 2, EF = ?

Let us first find the length of EF.

We know that, If two triangles are similar, then the corresponding sides are proportional.

⇒ $\frac{AC}{DF} =\frac{BC}{EF}$

⇒ $\frac{4}{2} =\frac{5}{EF}$

⇒ $4EF=5\times2$

⇒ $EF=\frac{5\times 2}{4}$

⇒ $EF=\frac{5}{2}$

Ratio of ΔABC to ΔDEF = $\frac{AC}{DF} =\frac{4}{2}=\frac{2}{1}$

Similarly, ratio of ΔABC to ΔDEF = $\frac{BC}{EF} =\frac{5}{\frac{5}{2}}=\frac{2}{1}$

Hence, the similarity ratio of ΔABC to ΔDEF = 2 : 1.

6 0

2 years ago

The fraction 24/5 lies between which 2 whole numbers?

defon

The two numbers it lies between are 4 and 5

8 0

2 years ago

Read 2 more answers

Is there a way to simplify the process of plugging in factors through synthetic division to find the zeros of a polynomial? I am

Iteru [2.4K]

Yes you can use the discriminant of a quadratic/polynomial. For instance, if
$b^2 - 4ac = 0$ there is one real root. If $b^2 - 4ac > 0$ there are two real roots and i $b^2 - 4ac < 0$ there are no real roots

The discriminant comes from the quadratic equation, which is the following.
$x = \frac{-b \pm \sqrt{b^2-4ac}}{2a}$

4 0

3 years ago

WILL MARK BRAINLIEST IF ITS RIGHT !!

Furkat [3]

Answer:

Around 0.22

FIRST THOUGH, I FEEL LIKE 90 MIGHT HAVE MEANT TO BEEN 0.9, SO IF SO SUBSTITUTE THE 90 BELOW FOR 0.9!

Step-by-step explanation:

Okay, so first.

Company A will be 50 a day plus 0.4 a mile

Company B will be 30 a day plus 90 per mile

We can write an equation like this:

50 + 0.4m = 30 + 90m

m = miles they are the same

Then we solve for m.

50 + 0.4m = 30 + 90m

- 0.4m - 0.4m

50 = 30 + 89.6m

- 30 - 30

20 = 89.6m

Divide both sides by 89.6

Around 0.22!

5 0

2 years ago