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4 years ago

I really need help with this one

Mathematics

1 answer:

Novay_Z [31]4 years ago

3 0

Answer:

Step-by-step explanation:

Since B is the midpoint of AC, that means AB = BC. That means 3x+4 = 5x-6. We can now set up an equation to solve for x:

3x+4 = 5x-6

3x+10 = 5x

10 = 2x

x = 5

Now that we know what x is, we can just plug x into the expression of AB and multiply it by 2:

(3*(5)+4)*2

=(15+4)*2

=19*2

=28

(side note: we could have plugged x into the expression of BC as well, but in this case plugging it into AB tends to be easier to solve)

Therefore, the length of AC is 28.

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Which linear equation represents the data given in the table.

amm1812

Answer
B
Explanation
Look for a 9 on the y axis then do Y2-Y1/X2-X1 with any 2 plots on the table

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3 years ago

I need help on that one plzzz help me this is due tommorw morning answer

vfiekz [6]

Answer:

A = 45

B = 90

C = 45

Step-by-step explanation:

Isosceles triangles have two side that are the same and two angles that are the same. Since one angle, B, is a right angle, 90°, that means the other 2 angles, A & C, added together equal 90°.

Divide 90 by 2 and you 45° for both A and C.

4 0

3 years ago

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It rains 7 out of every 10 days. What is the chance of rain on one day?

Aleksandr [31]

Answer:

if it rains 7 out of 10 days the chance of rain for one day is 70%

Step-by-step explanation:

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3 years ago

X/2 - 1 < 5 | x = ? help please

aliina [53]

Answer:

x<12

Step-by-step explanation:

x/2 - 1 <5

x/2 < 6

x < 12

4 0

4 years ago

A population of insects grows exponentially, as shown in the table. Suppose the increase in population continues at the same rat

oksano4ka [1.4K]

Answer-

The insect population at the end of week 11 is 1730.

Solution-

A population of insects grows exponentially.

The general form of exponential function is,

$y=ab^x$

Where,

a, b are constants.

Putting the data given in the table, in the the equation in order to get the values of a, b

At (0, 20)

$\Rightarrow 20=ab^0$

$\Rightarrow a\cdot (1)=20$

$\Rightarrow a=20$

Now the exponential function becomes,

$y=20b^x$

At (1, 30)

$\Rightarrow 30=20b^1$

$\Rightarrow 20b=30$

$\Rightarrow b=\dfrac{30}{20}$

$\Rightarrow b=\dfrac{3}{2}$

Now the equation becomes,

$y=20(\frac{3}{2})^x$

For calculating the number of insects at the end of the 11th week, putting x=11, so

$y=20(\frac{3}{2})^{11}$

$=1729.95 \approx 1730$

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4 years ago

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