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3 years ago

Help, please the question and thank you

Mathematics

1 answer:

Law Incorporation [45]3 years ago

3 0

Answer:

The scale factor is 1.5.

Step-by-step explanation:

Divide the length of the image, 12, by the length of the preimage, 8, which will give you 1.5

12 ÷ 8 = 1.5

Therefore, the scale factor of the image is 1.5.

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Evaluate 6 - 2(-1) + | -5 | =

tester [92]

Answer:

Step-by-step explanation:

The product of two negative numbers is positive. The absolute value of a number is its magnitude written with a positive sign.

6 -2(-1) +|-5|

= 6 + 2 + 5

= 13

8 0

3 years ago

Using Cramer’s Rule, what is the value of y in the system of linear equations below?

Vadim26 [7]

for the system of equations

$a_1x+b_1y=c_1 \\a_2x+b_2y=c_2$

the three matrices needed to use Cramer's Rule are:

$D=\left[\begin{array}{cc}a_1&b_1\\a_2&b_2\end{array}\right] \\\\D_x=\left[\begin{array}{cc}c_1&b_1\\c_2&b_2\end{array}\right] \\\\D_y=\left[\begin{array}{cc}a_1&c_1\\a_2&c_2\end{array}\right]$ .

To use Cramer's Rule we have to calculate the three determinants listed below of the matrices listed below.

$D=\left[\begin{array}{cc}2&5\\-3&-2\end{array}\right] \\\\D_x=\left[\begin{array}{cc}-13&5\\3&-2\end{array}\right] \\\\D_y=\left[\begin{array}{cc}2&-13\\-3&3\end{array}\right]$ .

The value of the determinants are shown below.

$det(D)=(2)(-2)-(-3)(5)=-4+15=11\\det(D_x)=(-13)(-2)-(3)(5)=26-15=11\\det(D_y)=(2)(3)-(-3)(-13)=6-39=-33\\$

The value of y is $\frac{det(D_y)}{det(D)}=-\frac{33}{11} =-3.$ .

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4 years ago

Evaluate the expression 4 x (9 ÷ 3) + 6 − 2 using PEMDAS. (4 points)

ra1l [238]

Eres una pinche pendejha huevona que no quiere hacer su pinche tarea, y no te sabes lavar el culo pendeja

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3 years ago

Read 2 more answers

You are flying your dragon kite. It's connected to 38yd of string. The kite is directly above the edge of the pond. The edge of

Slav-nsk [51]

We have a right triangle with hypotenuse 38 and leg 34.
We want to find the other leg.

We use the Pythagorean Theorem:
$a^{2}+b^{2}=c^{2}$
$\Rightarrow a^{2}+34^{2}=38^{2}$
$\Rightarrow a^{2}+1156=1444$
$\Rightarrow a^{2}=288$
$\Rightarrow a=12\sqrt{2}\approx 17.0$

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4 years ago

What does a sneeze do? <br><br> PLEASE HELP!!!!!!

AVprozaik [17]

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Step-by-step explanation:

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3 years ago