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Nonamiya [84]
2 years ago
15

Use the coordinates J(7, 8), K(1, 2) and L(5, 2) for △JKL.

Mathematics
2 answers:
Ratling [72]2 years ago
6 0

Answer:

The answer is the second option 4.8

Step-by-step explanation:

I just did the test.

worty [1.4K]2 years ago
4 0

Answer:

4.8

Step-by-step explanation:

I got it correct on my test.

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A postcard has an area of 24 square inches. Two enlargements of the postcard have areas of 54 square inches and 96 square inches
Alex777 [14]

Answer:

original is 4 & 6.

for 54 sq inch= 6 & 9 and for 96 sq inch=8 & 12

Step-by-step explanation:

Given: The length is 1.5 times the width.

so the length is, l = 1.5w ----(a)

lw = 24  =1.5w(w)

lw = 54= 1.5w(w)

lw = 96 =1.5w(w)

Further simplifying it,

1.5w^{2}=24

1.5w^{2}=54

1.5w^{2}=96

so,

w^{2} = \frac{24}{1.5}=16

w^{2}= \frac{54}{1.5} =36

w^{2}= \frac{96}{1.5} =64

taking the square root, we get:

w = 4

w = 6

w = 8

By putting the above values in eq (a), we can find their corresponding lengths:

l = 1.5(4) = 6

l = 1.5(6) = 9

l = 1.5(8) = 12

So a few lengths could be:

(l, w)

(6,4)

(9,6)

(12,8)

5 0
3 years ago
Read 2 more answers
Find the equation of the exponential function represented by the table below:
IgorC [24]

Answer:

y=2^{1-x}

Step-by-step explanation:

<u>Exponential Function</u>

When we need to express the exponential relation between two variables, we use the equation

y=Cr^{x}

where C, r are constants to be determined by using the given points from the table

For x=0, y=2, thus

2=C.r^{0}=C

We find that C=2

The equation is now

y=2r^{x}

Now we use the point x=1, y=1

1=2r

We find that

\displaystyle r=\frac{1}{2}

Thus, the equation is

\displaystyle y=2\left(\frac{1}{2}\right)^{x}

Rearranging

y=2(2)^{-x}=2^{1-x}

The required equation is

y=2^{1-x}

We can easily verify the last two points are also obtained by using the equation

7 0
3 years ago
Jessica and Emily each improved their yards by planting daylilies and ivy. They bought their supplies from the same store. Jessi
Darya [45]

Answer:The cost of one daylily is 6, and the cost of one pot of ivy is 8.

Step-by-step explanation:

7 0
3 years ago
Given that f(x) = x² + 4x, evaluate f(-2). -4 -8 -12
Aleks [24]
<span>f(x) = x² + 4x
so
</span><span>f(-2) = (-2)² + 4(-2)
f(-2) = 4 - 8
f(-2) = -4

answer
-4</span>
6 0
3 years ago
Read 2 more answers
FIRST TO ANSWER RIGHT WILL GET BRAINLYEST!!!please if you have a heart please help me!!
gtnhenbr [62]

Answer:

it is 4 if you needed which of the 2

6 0
3 years ago
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