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tangare [24]
3 years ago
6

Simplify 7 - 2(5 - 2x)

Mathematics
1 answer:
igomit [66]3 years ago
3 0

Answer:

4 − 3

Step-by-step explanation:

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Use the function f(x) = 2x3 - 3x2 + 7 to complete the exercises.
leonid [27]

Answer:

Step-by-step explanation:

The value of the function f(x) at x=a can be determined by substituting a instead of x into the function expression.

1. When x=-1, then

f(-1)=2\cdot (-1)^3-3\cdot (-1)^2+7=-2-3+7=2.

2. When x=1, then

f(1)=2\cdot 1^3-3\cdot 1^2+7=2-3+7=6.

3. When x=2, then

f(-1)=2\cdot 2^3-3\cdot 2^2+7=16-12+7=11.

4 0
3 years ago
Read 2 more answers
Can someone plzz help me with this 86points
just olya [345]

Answer:I would do the same thing which is copy and paste because its very

difficult to find out how to do it but ill keep trying

Step-by-step explanation:

7 0
3 years ago
Find the value of the variable.
anzhelika [568]

Answer:

hope this helps you look it once.

8 0
2 years ago
If you wish to warm 40 kg of water by 18 ∘C for your bath, find what the quantity of heat is needed. Express your answer in calo
Harman [31]

Answer:

Quantity of heat needed (Q) = 722.753 × 10³

Step-by-step explanation:

According to question,

Mass of water (m) = 40 kg

Change in temperature ( ΔT) = 18°c

specific heat capacity of water = 4200 j kg^-1 k^-1

The specific heat capacity is the amount of heat required to change the temperature of 1 kg of substance to 1 degree celcius or 1 kelvin .

So, Heat (Q) = m×s×ΔT

Or,          Q = 40 kg × 4200 × 18

or,           Q = 3024 × 10³ joule

Hence, Quantity of heat needed (Q) = 3024 × 10³ joule    

In calories 4.184 joule = 1 calorie

So, 3024 × 10³ joule = 722.753 × 10³

6 0
3 years ago
Please help me ASAP
V125BC [204]
I'd say it's "convergent and doesn't have a sum"

because it's multiplying by 3 to get every new number and switching between ± after every new number. there is no sum because it's an infinite series.
8 0
4 years ago
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