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3 years ago

Please help meeeeeeeeeeeeeeee

Mathematics

1 answer:

erik [133]3 years ago

5 0

Answer:

1) B

2) D

3) A

4) B

Step-by-step explanation:

We use a closed/filled in dot in math to represent an inequality where we have ≤ or ≥ and an open dot when its < or >. This is to represent that from the inequality we are also including the = component of the inequality.

After you know this, its pretty simple to work out which way the numbers go on the number line when its greater or less than depending on the question

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Solve for x. The triangles in each pair are similar.

KatRina [158]

Answer:

Step-by-step explanation:

You need to pay very close attention to the triangle similarity statement. This says that triangle NML is similar to triangle NVU. But if you look at the way that triangle NVU is oriented in its appearance, it's laying on its side. We need to set it upright so that angle N is the vertex angle, angle V is the base angle on the left, and angle U is the base angle on the right. When we do that we see that sides NV and NM are corresponding and exist in a ratio to one another; likewise with sides VU and ML. Setting up the proportion:

$\frac{NV}{NM}=\frac{VU}{ML}$

Filling in:

$\frac{12}{36} =\frac{9}{9x}$

Cross multiply to get

324 = 108x

and x = 3

3 0

3 years ago

Given that y = 18 + 3x² i) express x in terms of y

fgiga [73]

Answer:

$\sqrt{-6 + \frac{y}{3}} = x$

Step-by-step explanation:

y = 18 + 3x²

- 18 - 18

__________

$\frac{-18 + y}{3} = \frac{3x^2}{3} \\ \\ -6 + \frac{y}{3} = x^2 \\ \\ \sqrt{-6 + \frac{y}{3}} = x$

I am joyous to assist you anytime.

6 0

2 years ago

What is 5x –7(2)-7(4)?

BartSMP [9]

Answer:

5x-42

Step-by-step explanation:

5x-7(2)-7(4)

5x-14-28

5x-42

8 0

3 years ago

Read 2 more answers

Find each sum 1. 56 + (-56) 2. -240 + 370 3. -5.7 + (-4.2)

Zinaida [17]

Answer:

1. 0

2. 130

3. − 9.9

sorry if am wrong

4 0

2 years ago

Read 2 more answers

One California fan palm tree grew 85 inches in 5 years. A queen palm tree grew 96 inches in 8 years. which tree grew faster? Exp

tester [92]

In 5 years one California Palm tree grew = 85 inches.
Then in 1 year the California palm tree grew = (85/5) inches
= 17 inches
Again
A queen palm tree in 8 years grew = 96 inches
In 1 year the queen palm tree grew = (96/8) inches
= 12 inches.
So the California palm tree is growing at a faster rate than the queen palm tree. This is the easiest way of solving this kind of problems. Hope that i have explained the problem enough for you to understand and attempt such problems in the future without anyone's help.

3 0

3 years ago