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xenn [34]
3 years ago
7

PLZ HURRY Last question i need a good grade

Mathematics
1 answer:
NISA [10]3 years ago
4 0

Answer:

C. The lines are perpendicular

Step-by-step explanation:

GO GET GOOD GrADE

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If A(0, 0) and B(2, 5), find AB. If necessary, submit your answer as a decimal to the nearest tenth. (Remember: AB means "the di
Olin [163]
To determine the distance between two points, we use the equation,
                                   distance = √(x₂ - x₁)² + (y₂ - y₁)²
Substituting the known values for the abscissa and ordinates of the points,
                                distance = √(0 - 2)² + (0 - 5)² = √29 ≈ 5.39 
Therefore, the distance between these two points is approximately equal to 5.39. 
8 0
4 years ago
How do I do this qn?
denis-greek [22]
You can take the log of the left and right hand side, and then apply the <span>logarithm rules:

log(a</span>ˣ) = x·log(a)
log(ab) = log(a) + log(b)

log(9^(x-1) * 2^(2x+2)) = log(6^(3x))
log(9^(x-1)) + log(2^(2x+2)) = 3x log(6)
(x-1) log(9) + (2x+2) log(2) - 3x log(6) = 0
x(log9 + 2log2 - 3log6) = log9 - 2log2
x = (log9 - 2log2) / (log9 + 2log2 - 3log6)

simplifying by writing log9 = 2log3 and log6 = log2+log3

x= 2(log3 - log2) / (2log3 + 2log2 - 3log2 - 3log3) = 
x= -2(log3 - log2) / (log3 + log2) = -2 log(3/2) / log(6)

So 6^x = 4/9
3 0
4 years ago
A rectangle has a height to width ratio of 3:4.5. Give two examples of dimensions for rectangles that could be scaled versions o
OlgaM077 [116]

We have been given that a rectangle has a height to width ratio of 3:4.5.

Let h be height and w be width of rectangle.

We can set our given information in an equation as:

\frac{h}{w} =\frac{3}{4.5}

h=\frac{3}{4.5} *w

Now we will substitute h=1 in this equation.

1=\frac{3}{4.5} *w

3w=4.5

w=\frac{4.5}{3} =1.5

We can see that width of rectangle is 1.5 times height of rectangle.

Our one set of dimensions of rectangle will be: height=1 and width=1.5.

We can get many set of dimensions for our rectangle by multiplying both height and width of rectangle by same number.

Multiplying by 5 we will get our dimensions as: height 5 and width 7.5.  

Therefore, (1 and 1.5) and (5 and 7.5) dimensions for rectangle will be scaled version of our rectangle.

6 0
3 years ago
What is -5/6 divided by 9/10?<br><br> A. -27/25<br><br> B. -4/3<br><br> C. -3/4<br><br> D. -25/27
kakasveta [241]
-\frac{5}{6} ÷ \frac{9}{10}

First, apply the rule (easiest way if you have learned it): a ÷ \frac{b}{c} = a × \frac{c}{b}
- \frac{5}{6} × \frac{10}{9}
Second, apply the last rule: \frac{a}{b} × \frac{c}{d} =  \frac{ac}{bd}
- \frac{5*10}{6*9}
Third, multiply 5 × 10 to get 50.
- \frac{50}{6*9}
Fourth, multiply 6 × 9 to get 54. 
-\frac{50}{54}
Fifth, find the GCF of 50 and 54.
The GCF should be 2.
Sixth, divide the numerator by the GCF. 
50 ÷ 2 = 25
Seventh, divide the denominator by the GCF.
54 ÷ 2 = 27
Eighth, now put 25 and 27 together to get the simplified fraction.
- \frac{25}{27}

Answer as fraction: -\frac{25}{27}
Answer as decimal: 0.9259

7 0
3 years ago
*EASY GRADE 7 MATH*
nirvana33 [79]

Answer:

576π in² and 1,809 in².

Step-by-step explanation:

To find the answer, the formula for the area of a circle, or A = πr², will need to be used.

In this question, we are only given the diameter. Simply divide by 2 to calculate the radius:

48/2 = 24 inches.

Now, plugging this into the equation for the Area of a Circle, gets us:

A = π24²

A = 576π or 1808.64 in².

Looking at the answer choices, we can choose 576π in² and 1,809 in² (as 1808.64 ≈1809)

4 0
3 years ago
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