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Nastasia [14]
2 years ago
11

HELP ME PLEASE I NEED TO PASS THIS

Mathematics
2 answers:
Lerok [7]2 years ago
8 0

Answer:

D

Step-by-step explanation:

matrix multiplication says you take the [x y] vector sideways (as is here) and mutliply by each row. So your top row is

3·x + -1·y  which equals 3x-y.

Since this is the top row of your solution,

3x - y = 8.

The bottom row is the same process.

1·x + 2·y = 5

x + 2y = 5

irga5000 [103]2 years ago
5 0

Answer:

i believe the answer is D

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Norma Jean makes $25 per hour. She works 35 hours per week. She gets a commission of 15% on her total sales. How much should Nor
TEA [102]

Answer:

$24166.67

Step-by-step explanation:

$25 per hour and works 35 hours per week

Norma Jean makes 35 * 25  (<em>without sales) = </em>$875

<em> </em>Total commission made by Norma<em> </em>= 4500-875 = $3625

<em>let total number of sales by Norma be x</em>

15% is the same as 15/100

<em>so </em>(15/100) * x =3625 <em> multiplying both sides by 100</em>

15x = 362500<em> making x subject of formula</em>

x = 362500/15

x = 24 166.67

Norma should sell total items worth $24166.67

 

6 0
3 years ago
Read 2 more answers
A 33 gram sample of a substance that's<br> used to detect explosives has a k-value<br> of 0.1467.
romanna [79]

Answer:From the attached graphic, Half-life = ln (.5) / k

Half-life =.693147 / 0.1142

= 6.0695884413 days

Step-by-step explanation:The value of "k" should be negative and should have units associated with it.

3 0
2 years ago
Tuesday and Wednesday work
AURORKA [14]
Prime factorizations - Wednesday work
1. 44     2^2 • 11
2. 125    5^3
3. 85     5 • 17
4. 39     3 • 13
5. 63     3^2 • 7
6. 240    2^4 • 3 • 5
7. 87     3 • 29
8. 45     3^2 • 5
8 0
3 years ago
28 is increased by 150%. what's the final number
sp2606 [1]

Answer:

70

Step-by-step explanation:

20x(1+150%)

28x(1+1.5)

28x2.5

70

5 0
2 years ago
Hi, please help me :)
bearhunter [10]

Answer:

D. Linear

The answer is negative linear, because when it incresing from 0 to 1 to 2 to 3 (year) it always deacreasing in the value($).

4 0
3 years ago
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