If c = 8h +2 calculate c when h = 5
Answers
8× 5 + 2 = 42
c = 42
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Answers
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−4x+15=−13
Subtract 15 from both sides.
−4x+15−15=−13−15
−4x=−28
Divide both sides by -4.
−4x/−4 = −28/−4
x=7
Answers
rectangular prism = 28 cubic cm
convert to square based or cube
volume of rectangular prism = length * width * height
volume of a cube = a³
√28 = 3.03658897188
Amita can use 3 possible molds that are square based.
(Factorise)
X^2 + 7x + 11 = 0
(Use the quadratic formula)
Answers
ax^2+bx+c=0
find what 2 number multiply to c and add to b
what 2 numbers multiply to 6 and add to 5
2 and 3
(x+2)(x+3)=0
set to zero
x+2=0
x=-2
x+3=0
x=-3
x=-2 or -3
other one
for ax^2+bx+c=0
x=
we are given
x^2+7x+11=0
a=1
b=7
c=11
sub
x=
x=
x=
x=
Answers
£132 in the ratio 3:8 as 36 and 96.
What is Ratio?
A ratio is a comparison between two amounts that is calculated by dividing one amount by the other. The quotient a/b is referred to as the ratio between a and b if a and b are two quantities of the same kind and with the same units, such that b is not equal to 0. Ratios are represented by the colon symbol. As a result, the ratio a/b has no units and is represented by the notation a: b.
Given:
Ratio= 3:8
Now, total = 3+ 8 = 11
So, First
£132 x 8/ 11
= 12 x 8
= 96
and, second
132 / 3/11
= 12 x 3
= 36
Hence, £132 in the ratio 3:8 as 36 and 96.
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£132 / 11 = £12
£12 x 3 = £36
£12 x 8 = £96
So your answer is £36:£96
Answers
Final answer:
The student's answer is incorrect because they failed to factor out a common factor of 8. The correct factorisation of the trinomial 8x^2 -8x-16 is 8(x - 2)(x + 1).
Explanation:
The student's answer of (x-2)(x+1) is incorrect for the trinomial 8x^2 -8x-16. The first step in factoring a trinomial is to look for a common factor in all terms. In this case, we have a common factor of 8, so we can rewrite the trinomial as 8(x^2 - x -2). Then we can factorise the quadratic equation, x^2 - x - 2, within the parenthesis using the general formula ax²+bx+c = 0, where the solutions or roots can be calculated using the formula -b ± √b² - 4ac over 2a. Factoring this equation gives us (x - 2)(x + 1) but because of the initial 8 we factored out, the correct factoring of the trinomial would be 8(x-2)(x+1).
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Show all work?
keep your answer in simplified radical form.
Answers
SU=24
TU=16 square root of 3