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Elis [28]
3 years ago
12

1 Select the correct answer. Which rate is equivalent to ? A. B. C. D.

Mathematics
1 answer:
ki77a [65]3 years ago
7 0
D that is the answer have a good day D.
You might be interested in
-9/4 v + 4/5 = 7/8 v=? step by step need help asap please
Vesna [10]
-9/4v + 4/5 = 7/8; First, you subtract 4/5 from each side to have variable v on a side and numbers on the other: -9/4v = 7/8 - 4/5; -9/4v = 35/40 - 32/40; -9/4v = 3/40; Then you divide each side to get the variable v alone on a side, and one number on the other: V= (3/40) / (-9/4); Dividing to fractions is equal to multiplying the first one by the inverse of the second: V= (3/40) * (-4/9); V= -12/360; V= -1/30; You can re-check your answer (very important): (-9/4)*(-1/30)+4/5=7/8; The answer has been approved. Hope this helps! :)
4 0
3 years ago
Which statement about the quadratic parent function is true?
nikitadnepr [17]
The correct answer is B) its graph is symmetrical about the y-axis.

A quadratic graph cannot be "folded" across the x-axis.
The domain, or set of inputs, is all real numbers; there is no value of x for which there will be no y.
The range, or set of outputs, is not all real numbers; there are values of y that will not be used in the graph.
3 0
2 years ago
YEAR 9 MATHS
Lady bird [3.3K]
Small triangle : (1,4), (3,1), (3,4)
The x: (3,2)
The big triangle: (-3,3), (-1,5), (-2,1)

(For the big triangle that is only correct if the black dot is the mirror line)
4 0
3 years ago
Read 2 more answers
Which expression is equivalent to 4 square root 6 divided by 3 root 2
denis-greek [22]

Answer:

The expression is equivalent to 4 square root 6 divided by 3 root 2 is:

8/3

Step-by-step explanation:

Given expression:

4 square root 6 divided by 3 root 2

\frac{4\sqrt{6}}{3\sqrt{2} }

=\frac{4\sqrt{2*2*2}}{3\sqrt{2} }

=\frac{4\sqrt{2*2^{2} }}{3\sqrt{2} }

square root of 2² = 2 hence,

=\frac{4*2\sqrt{2}}{3\sqrt{2} }

=\frac{8\sqrt{2}}{3\sqrt{2} }

Common terms in the numerator and denominator cancels each other out

=\frac{8}{3}

By solving the expression using simple mathematical rules, we got an equivalent expression of

\frac{4\sqrt{6}}{3\sqrt{2} } = \frac{8}{3}

7 0
2 years ago
Read 2 more answers
Suppose a and b are the solutions to the quadratic equation 2x^2-3x-6=0. Find the value of (a+2)(b+2).
KonstantinChe [14]

Answer:

(a+2)(b+2) = 4

Step-by-step explanation:

We are given the following quadratic equation:

2x^2-3x-6=0

Let a a and b be the solution of the given quadratic equation.

Solving the equation:

2x^2-3x-6=0\\\text{Using the quadratic formula}\\\\x = \dfrac{-b \pm \sqrt{b^2-4ac}}{2a}\\\\\text{Comparing the equation to }ax^2 + bx + c = 0\\\text{We have}\\a = 2\\b = -3\\c = -6\\x = \dfrac{3\pm \sqrt{9-4(2)(-6)}}{4} = \dfrac{3\pm \sqrt{57}}{4}\\\\a = \dfrac{3+\sqrt{57}}{4}, b = \dfrac{3-\sqrt{57}}{4}

We have to find the value of (a+2)(b+2).

Putting the values:

(a+2)(b+2)\\\\=\bigg(\dfrac{3+\sqrt{57}}{4}+2\bigg)\bigg(\dfrac{3-\sqrt{57}}{4}+2\bigg)\\\\=\bigg(\dfrac{11+\sqrt{57}}{4}\bigg)\bigg(\dfrac{11-\sqrt{57}}{4}\bigg)\\\\=\dfrac{121-57}{156} = \dfrac{64}{16} = 4

3 0
2 years ago
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