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Aleksandr [31]
3 years ago
14

Please help me, I need to get a good score on this test so bad.

Mathematics
1 answer:
cluponka [151]3 years ago
3 0
1. (100 - 25) / 100...x 100
     75/100 = 0.75....x 100 = 75% decrease

2. (66 - 45) / 66....x 100
     21/66 = 0.318...x 100 = 31.8% increase

3. 36,000(1.05) = $ 37,800

4. 64(1.25) = 80

5. having trouble with this...what is the tax rate ? 75%...or 7.5%
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Which polynomials are prime? Check all that apply.
insens350 [35]
15x2+10x-9x+7
8x3+20x2+3x+12
11x4+4x2-6x2-16
Hope this helps !!
8 0
2 years ago
Read 2 more answers
Need answers ASSAP
ollegr [7]
Data:
r (radius) = 3.5 in
h (height) = 8 in
Adopt: \pi \approx3.14
V (volume) = ?
Ink cost per cubic inch = $0.05/in³
Total cost: ?

<span>Calculate the volume of the paint bucket (its formed being cylindrical), we have:
</span>V =  \pi *r^2*h 
V = 3.14 *3.5^2*8 
V = 3.14*12.25*8
\boxed{V = 307.72\:in^3}

<span>What was the total cost of the paint?

</span>price($)___measure(in³)
0.05 ---------- 1
y -------------- 307.72

It is made the rule of three: (<span>directly proportional)
</span>
\frac{0.05}{y} = \frac{1}{307.72}
multiply cross
1*y = 0.05*307.72
y = 15.386\:\to\:\boxed{\boxed{y\approx\$15}}\end{array}}\qquad\quad\checkmark

Answer:
<span>the total cost of the paint is $15</span>
7 0
3 years ago
Find the 12th term of the geometric sequence 5, –25, 125, ...<br> HELP ASAP WILL NAME BRAINLEST
kodGreya [7K]

Step-by-step explanation:

U _{ {12}^{th} } = a {r}^{(n - 1)}  \\  = 5 \times  {5}^{12 - 1}  \\  = 244140625 \\  {12}^{th}  \: term \: is \: 244140625

3 0
2 years ago
System of Linear Equations
dedylja [7]

Answer:

X=6

Y= - 1

Step-by-step explanation:

X-y =7

X+y =5 cross - y and y

_______

X+x =7 +5

2x= 12

X= 12/2

X= 6

Replace X in first equation:

X - y =7

6 - y =7

6 - 7 =y

y = - 1

Hope this helps you.. Good Luck!

8 0
3 years ago
If csc θ=8/7, which equation represents cotθ
TEA [102]
Sin θ = opposite leg/hypotenuse 
csc θ = hypotenuse /opposite leg =8/7

cot <span>θ = adjacent leg/opposite leg

hypotenuse =8
opposite leg =7
We need to find adjacent leg.

(Opposite leg)² +(adjacent leg)² = hypotenuse²
7² + </span>(adjacent leg)² =8²
(adjacent leg)² = 64 - 49
(adjacent leg)² = 15

adjacent leg=+/-√15
<span>WE need only positive root,
so </span>adjacent leg =√15

cot θ = √15/7 or 0.5533<span>

</span>
6 0
2 years ago
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