3 years ago

Someone pls helppp i am very confused

Mathematics

1 answer:

Aloiza [94]3 years ago

7 0

Hope this helps! My work is down below!

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marishachu [46]

Answer:

$11x^2-2x-6$

Step-by-step explanation:

$(4x^2+3x)+(7x^2-5x-6)= \\\\(4x^2+7x^2)+(3x-5x)-6= \\\\11x^2-2x-6$

Hope this helps!

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3 years ago

What are two types of values?<br> A B

nikklg [1K]

A and B are variables

6 0

4 years ago

Can someone please help me with this

ASHA 777 [7]

X is between -6 and 11 and y between -6 and 8

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3 years ago

Read 2 more answers

Question 9 - (3 marks available)

navik [9.2K]

Image of the triangle is attached

Answer:

24 cm

Step-by-step explanation:

If two triangles are similar, the corresponding sides must be in the same ratio.

From the diagram, the height of the triangle is 36cm.

But the height of triangle ABE = h,

To find the height of triangle BCD, let's subtract the height of triangle ABE from 36cm.

Therefore.

Height of BCD = 36 - h.

Since the triangles are similar and their corresponding sides have the same ratio, we have the expression:

$\frac{b}{h} = \frac{b}{h}$

Substituting figures, we have:

$\frac{20}{h} = \frac{10}{36-h}$

Cross multiplying, we have:

20(36-h) = 10 * h

720 - 20h = 10h

720 = 10h + 20h

720 = 30h

$h = \frac{720}{30}$

h = 24 cm

Therefore, the height of triangle ABE is 24cm

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3 years ago

An experiment consists of rolling a six sided die to select a number between 1 and 6 and drawing a card at random from a set of

Dennis_Churaev [7]

Answer:

Step-by-step explanation:

dice

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4 years ago