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ale4655 [162]
3 years ago
13

GIVING OUT BRAINLIEST HELP ME OUT PLSSS

Mathematics
2 answers:
ira [324]3 years ago
8 0

Answer:

90 degrees but mom not too sure

Tresset [83]3 years ago
4 0
Answer: cos(30)=sin(60)
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Harper wants to exchange £350 for dollars, how many more dollars would she get in the bank than in the post office
musickatia [10]

Answer: $24.50

Post office:£1 = $1.27

£350 = $1.27 × 350 = $444.50

Bank:£1 = $1.34

£350 = $1.34 × 350 = $469

Therefore, the difference will be:

= $469 - $444.50

= $24.50

8 0
3 years ago
If alpha beta are the roots of the equation
Vikki [24]

Answer:

Step-by-step explanation:

Hello, I believe that we can consider a different from 0.

By definition of the roots we can write.

ax^2+bx+c=a(x-\alpha)(x-\beta)=a(x^2-(\alpha + \beta)x+\alpha \cdot \beta)\\\\\text{So we can say that:}\\\\\alpha + \beta = \dfrac{-b}{a}\\\\\alpha \cdot \beta=\dfrac{c}{a}\\\\\text{So the expected quadratic equation is}\\\\(x+\dfrac{b}{a})(x-\dfrac{c}{a})=0\\\\ \Large \boxed{\sf \bf \ (ax+b)(ax-c)=0 \ }

Thank you

8 0
3 years ago
$99.99, 19% discount​
RSB [31]

Answer:

$80.99

Step-by-step explanation:

Turn the percentage into a decimal.

19% -> 0.19

Multiply.

99.99 * 0.19 ≈ 19

Subtract.

99.99 - 19 = 80.99

Best of Luck!

8 0
3 years ago
Read 2 more answers
t takes a total of 6 hours to fill up an inground backyard pool using a standard hose. A function can represent this situation t
Alina [70]

The domain is the set of inputs over which our function W(T) gives a valid result.


0 \le T \le 6 \textrm{ hours}



3 0
3 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar.
Allushta [10]

Answer:

The y-intercept of AB is y=4/3, the x-coordinate of the poit C is 4, the equation of the line that goes through BC is 6x-11=y

Step-by-step explanation:

To find the y-intercept of AB we first have to find the equation of the line that goes through this segment.

We firt compute the slope of the segement which is given by

m_1 = \dfrac{y_B - y_A}{x_B - x_A}= \dfrac{1-(-1)}{2-14} =\dfrac{-1}{6}

Using this we can compute the equation of the line through AB using the point B=(2,1) and the formula

\dfrac{-1}{6}=\dfrac{1-y}{2-x}

we solve the last equation for y and so we get

y=\dfrac{-x}{6}+\dfrac{4}{3}

The y-intercept of AB is the point in the line with x-coordinate equals to 0. Hence, the y-intercept is

y(0) = \frac{-0}{6}+\frac{4}{3}=\frac{4}{3}

Now, since the segments AB and BC are perpendicular, the slope of the line that goes through the segment BC is

m_2 = -\dfrac{1}{m_1}=-\dfrac{1}{-\frac{1}{6}}=6

Usinge the slope m_2 and knowing that the line goes through the point B=(2,1), to find the equation of the line through the segmen AC we use the following formula

6=\dfrac{y-1}{x-2}

we solve the equation for y and we get the equation

y=6x-11

Finally, to compute the x-coordinate of the point C we use the last equation and the fact that the y-coordinate is 13, it holds that

13 = 6 x - 11 \quad \Rightarrow \quad x = \dfrac{13 + 11}{6}=\dfrac{24}{6}=4

7 0
3 years ago
Read 2 more answers
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