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3 years ago

Factor of −21x^2+2x+8

Mathematics

1 answer:

Vanyuwa [196]3 years ago

5 0

Answer:

-(7x + 4)(3x - 2)

Step-by-step explanation:

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Neal thought of a number. When he divided 47 by his number the remainder was 5. What can Neal's number be? Find all possible ans

Alexxandr [17]

47x5= 235
235 divided by 5 =47
Neals number could be 47

6 0

3 years ago

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Line j and k are parllel lines that have been translated. The resulting imagine are show as j’and k’. How can you describe j’and

Taya2010 [7]

Answer:

j' and k' are also parallel to each other.

Step-by-step explanation:

After translation, the property of lines j and k remains.

i.e the lines continue to be parallel to each other.

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4 years ago

BD=16 and ÁT is the<br> perpendicular bisector of BD. Y=?

iren2701 [21]

Answer:

$y= 5$

Step-by-step explanation:

Given

$BD = 16$

$BC = 2y - 2$

$CD = y + 3$

Required

Find y

$BD = BC + CD$

So, the expression becomes

$16 = 2y - 2 + y + 3$

Collect like terms

$16 = 2y + y- 2 + 3$

$16 = 3y+1$

Collect like terms

$3y = 16 - 1$

$3y = 15$

Make y the subject

$y= 15/3$

$y= 5$

8 0

3 years ago

Given ΔADC and ΔAEB, What is AE?

chubhunter [2.5K]

Answer:

AE = 43.2 units

Step-by-step explanation:

As per the given question image, it can be seen that in the $\triangle ADC \text { and }\triangle AEB :$

1. $\angle B = \angle C = 90^\circ$

2. $\angle A$ is common to both the triangles.

3. Two angles are common, so the third angle $\angle E$ is also equal to $\angle D$ .

All the three angles in the $\triangle ADC \text { and }\triangle AEB$ are equal to each other, hence the triangles are similar.

As per the property of similar triangles, the ratio of their sides will be equal.

AB : AC = AE : AD

AC = 88 units

BC = 55 units

AB = AC - AB = 33 units

Let side AE = $x$ units

Side AD = AE + ED

So, AD = $x + 72$

Using the ratio:

$\dfrac{AB}{AC} = \dfrac{AE}{AD}\\\Rightarrow \dfrac{33}{55} = \dfrac{x}{x+72}\\\Rightarrow 55x = 33 \times 72\\\Rightarrow x = \dfrac{3\times 72}{5}\\\Rightarrow x = 43.2\ units$

So, AE = 43.2 units

4 0

3 years ago

HELP MEEEEEEE PLEASE

Alex787 [66]

The first option and the third one

8 0

3 years ago

Read 2 more answers