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Dmitriy789 [7]
3 years ago
10

I need help on this please

Mathematics
2 answers:
mash [69]3 years ago
8 0

Answer:

x is greather or equal to -0.9

Step-by-step explanation:

Dahasolnce [82]3 years ago
6 0

Answer:

B

x \geqslant  - 0.9

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10 squared divided by 2c -b + 3a<br><br> A = 1/3<br> B= 9<br> C = 5
Svet_ta [14]

Answer:

50

Step-by-step explanation:

Figure out all variables

100/(2x5= 10)-9+(3x.33=1)

100/10-9+1

100/2

50

8 0
4 years ago
angle, a and angle, b are complementary angles. angle a measures 22, degrees. What is the measure of angle b?
Natali [406]

Answer:

158 degrees is angle b I think so

7 0
3 years ago
A cylinder of manganese (length 4.00 cm, diameter = 1.00 cm) has a mass of 22.62 g. What is the density of manganese?
Gnom [1K]
Equation for density is mass/volume

Mass=22.62 g

Volume= 22/7 x 1/2^2 x 4

3.14 x 0.5 x 0.5 x 4

=3.14 cm3

Mass/ Volume

22.62/3.14

7.2 g/cm3 is the answer

5 0
3 years ago
If z^2+1/z^2=11 , find the value of z^3-1/z^3,using only the positive value of z-1/z
vredina [299]
Hello,

Let's assume

t=z- \dfrac{1}{z} \\\\&#10;&#10;t^2=z^2-2+ \dfrac{1}{z^2}= 11-2=9==\ \textgreater \ t=3\\\\&#10;&#10;t^3=z^3-3z^2* \dfrac{1}{z} +3z* \dfrac{1}{z^2} - \dfrac{1}{z^3} \\\\&#10;=z^3 - \dfrac{1}{z^3} -3(z-\dfrac{1}{z})\\\\&#10;z^3 - \dfrac{1}{z^3}=t^3+3t=3^3+9=27+9=36&#10;&#10;&#10;
7 0
3 years ago
1
AfilCa [17]

Answer:

(A) Your friend will save $282.

(B) Your friend will get 23.5% off the original price of the mattress.

Step-by-step explanation:

We first need to find out the price of the mattress after the 15% discount. Our first step is to find what 15% of 1,200 is. We can do this by multiplying the two numbers.

1,200 x 15% -----> 1,200 x 0.15= 180.

15% of $1,200 is $180.

Next subtract $180 from $1,200, which equals $1,020. We can now apply the 10% off internet coupon.

1,020 x 10% ------> 1,020 x 0.10= 102.

10% of $1,020 is $102.

Next we subtract $102 from $1,020 and we get $918, the final price of the discounted mattress.

We subtract to see how much money the friend saved.

$1,200 - $918= $282.

We can get the percentage by dividing $282 by $1,200.

282 / 1200= 0.235 decimal form ----> 23.5%

6 0
3 years ago
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