3 years ago

Help please!!!!!!!!!!!!!

Mathematics

1 answer:

Annette [7]3 years ago

8 0

Answer:

Hm? Is there meant to be a file, if so I can’t see it. :((

Step-by-step explanation:

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Factorise :x^2-4x-21+10y-y^2

Elenna [48]

Answer:

This cannot factor

Step-by-step explanation:

This cannot factor because there is no number that can be factored out of all of the terms.

4 0

3 years ago

There are 20 female performers in a dance recitial. The ratio of men to women is 3;4 . How many men are in the dance recitial.

Triss [41]

Answer:

There are 15 men in the dance recital.

Step-by-step explanation:

If 20 people is 4 parts, then 5 people are 1 part. Due to that, 15 people will equal 3 parts.

8 0

3 years ago

All help is much appreciated please and thank you

scoundrel [369]

Anddd Similar traingles for one more time.

Here,
RQ/RP = RS/RT = QS/PT = 1/2

Using the values of QS and PT will give,

$\frac{y}{y + 46} = \frac{1}{2} \\ \\ 2y =y + 46 \\ \\ y = 46$

Therefore y= 46 units.

6 0

3 years ago

-10x - 135 = 117 + 2x A. 25 B. -18 C. -21 D. 22 Helps pls

Lina20 [59]

Answer:

Step-by-step explanation:

Add 10x to both sides:

-10x - 135 = 117 + 2x

-10x - 135 + 10x = 117 + 2x + 10x

-135 = 117 + 12x

Subtract 117 from both sides:

-135 - 117 = 117 + 12x - 117

-252 = 12x

Divide both sides by 12:

$\frac{-252}{12} = \frac{12x}{12}$

-21 = x

So the answer is C.

Hope this helps!

6 0

2 years ago

Read 2 more answers

A 52 foot ladder is set against the side of a house so that it reaches up 48 feet. If Jace

Alik [6]

Answer:

34.3

Step-by-step explanation:

8 0

3 years ago