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3 years ago

-(7-9)z-6z=8(-6+2) solve for z

Mathematics

1 answer:

Sergeeva-Olga [200]3 years ago

5 0

Answer:

(-(7-9))(z)-6z= 8(-6+2)

Simplify

-(-2)(z) -6z =8(-6+2)

Multiply 8*-6 and 8*2

2z -6z= -48+16

Combine like terms

2z+-6z =-32

-4z=-32

Divide both sides by -4

z=8

Step-by-step explanation:

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Write the standard form of the line that passes through (-1,-3) and (2,1)

Pie

Answer:

$5 = - 2x - y$
To find this you must find the slope first:
$\frac{y - y1}{x - x1}$
which is, after performing some calculating is -2.

Next you need to set up your eqaution:
$y - y1 = m(x - x1)$
when you set it up, and substitute the variables for your slope and points you should get this:
$y - ( - 3) = - 2(x - 1)$
$y + 3 = - 2x - 2$
add 2 to both sides
$y + 5 = - 2x$
subtract y from both sides
$5 = - 2x - y$

6 0

3 years ago

Rico earns a weekly salary of $750 and a 5% total Commission on his sales Sean earns a weekly salary of $1,100 and a 2.5% commis

NNADVOKAT [17]

To answer this item, we let x be the amount of sales for each of them. Their weekly earnings would be as follows,

Rico:
750 + 0.05x

Sean:
1100 + 0.025x

Equating both expressions,

750 + 0.05x = 1100 + 0.025x

Simplifying,
0.025x = 350

The value of x from the equation is 14000.

Answer: $14,000.

4 0

4 years ago

Read 2 more answers

There were 42 apples in each crate. 12 such crates of apples were delivered to a factory. 4 apples were rotten and had to be thr

ElenaW [278]

Answer:

50 apples

Step-by-step explanation:

Firstly,you need to find the total apples delivered by multiplying 42 with 12 as there are 42 apples in each crate and the sent 12 crates to the factory

Then,the answer you get you have to minus with 4 as 4 apples are rotten

Answer obtained then divided by 10 to get the total boxes needed to pack the apples

Hope this help!

4 0

4 years ago

A package of Toys Galore Cereal is marked "Net Wt. 13 oz." The actual weight is normally distributed, with a mean of 13 oz and a

babunello [35]

The solution to the Questions are

P(z<0)=50%
W=18.08oz

<h3>What weight will be exceeded by 2.3% of the packages? </h3>

where

u=13

n^2=0.16

$\sigma=\sqrt{0.16}\\\\\sigma=0.4$

Generally, the equation for is mathematically given as

$X-N(u=13,\sigma=0.4)$

p(x<14)=P(z<\frac{13-13}{0.4})

P(z<0)

P=0.5

Therefore

P(z<0)=50%

In conclusion

W=(u+2\sigma)

W=(13+2*0.4)

W=13+0.8

W=18.08oz