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Nadya [2.5K]
3 years ago
7

Which expressions are equivalent to -56z + 28.

Mathematics
1 answer:
NeX [460]3 years ago
5 0

Answer:

B and C

Step-by-step explanation:

(-7)•8z = -56z

(-4)•(-7)=28

and

40•(-1.4)= -56z

40•0.7= 28

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If I buy a pair of $45 dollar jeans and I get a 15% percent discount but I have to pay a 6% sales a tax how much are the jeans g
irina [24]
$45 x .15 = $6.75 discount
$45 - $6.75= $38.25

Sales tax 6%
$38.25 x 0.6 =$ 2.29
$38.25 + $2.29 = 40.54$

Jeans total is 40.54$

6 0
3 years ago
Read 2 more answers
Plzzz help, the quicker the better!!!!!!
pishuonlain [190]

Answer:

26

Step-by-step explanation:

here,

the lower angle when sumed,

it is like: 154+a=180 (let angle be a) being supplementary angle sum is 180

so value of a becomes 26

then,

the above angle x is corresponding to angle a (a=x)

So value x is 26

7 0
3 years ago
Please help me with this problem
My name is Ann [436]

Answer:

6A- 8B = \left[\begin{array}{ccc}56&50&-14\\-126&92&62\\-78&26&2\end{array}\right]

Option A is correct.

Step-by-step explanation:

A=\left[\begin{array}{ccc}-4&-1&-9\\-9&6&9\\-1&-1&3\end{array}\right] \\B=\left[\begin{array}{ccc}-10&-7&-5\\9&-7&-1\\9&-4&2\end{array}\right]

We need to find 6A - 8B

Multiply matrix A with 6 and matrix B with 8 and then subtract 6A - 8B

6A=\left[\begin{array}{ccc}-24&-6&-54\\-54&36&54\\-6&-6&18\end{array}\right] \\8B=\left[\begin{array}{ccc}-80&-56&-40\\72&-56&-8\\72&-32&16\end{array}\right]\\6A - 8B =\left[\begin{array}{ccc}-24-(-80)&-6-(-56)&-54-(-40)\\-54-(72)&36-(-56)&54-(-8)\\-6-(72)&-6-(-32)&18-(16)\end{array}\right] \\6A - 8B =\left[\begin{array}{ccc}-24+80&-6+56&-54+40\\-54-72&36+56&54+8\\-6-72&-6+32&18-16\end{array}\right] \\6A- 8B = \left[\begin{array}{ccc}56&50&-14\\-126&92&62\\-78&26&2\end{array}\right]

So, 6A- 8B = \left[\begin{array}{ccc}56&50&-14\\-126&92&62\\-78&26&2\end{array}\right]

Option A is correct.

3 0
3 years ago
The interest of rs12000 for 3yrs is rs2160.find the rate of interest<br>​
Karolina [17]

Answer:

6%

Step-by-step explanation:

Given,

Interest (I) = 2160

Principal (P) = 12000

Time (T) = 3 yrs

Rate (R) = ?

We know that,

R = ( I *100)/ (P*T)

= (2160*100)/(12000*3)

= 6%

therefore, the rate of interest is 6%

6 0
3 years ago
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Rzqust [24]
Divide 7 and 3/7 by 3 and 1/4

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8 0
4 years ago
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