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Svet_ta [14]
3 years ago
7

A student answers ​90% of the questions on a math exam correctly. If she answers 27 questions​ correctly, how many questions are

on the​ exam?
Mathematics
1 answer:
alexandr1967 [171]3 years ago
6 0

Answer:

30 questions

Step-by-step explanation:

You can discover this by doing 27 divided by . 90 which equals 30.

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Does the table describe x as a function of y?
kicyunya [14]

Answer:

C. No, more than one output value x is assigned to the input y-value

Step-by-step explanation:

Given

х      у

-3    -2

3     6

0      7

1       7

2      4

3     - 1

Required

State if the table shows x as a function of y

x being a function of y means

x = f(y)

i.e. x represents the output while y represents the input of the function

Note that each value of y (input) must be assigned to separate values of x (output) for a function to be established

Having said;

Next step: We have to examine the x and y column

In the y column, the value 7 occurred twice (as shown below)

<em>х      у </em>

<em>0      7 </em>

<em>1       7 </em>

<em />

This implies that;

Input 7 gives output of 0 and 1.

<em>Hence, this is not a function.</em>

<em>Option C answers the question.</em>

7 0
4 years ago
If m&lt; BOE = 130 degrees and m&lt; cob = 80 degrees
hjlf

Answer:

then what?

Step-by-step explanation:

do we have to find the angle?

all I know is every right triangle is equal to 90°

6 0
3 years ago
Complete the square to transform the quadratic equation into the form
faltersainse [42]

The square of a binomial is written like

(x\pm a)^2 = x^2\pm 2ax + a^2

In your case, you have 2ax=-8x, which implies a=-4

So, we want to write

(x-4)^2 = x^2-8x+16

But our left hand side is

x^2-8x-10

If we add 26 to both sides, we have

x^2 - 8x - 10 +26 = 18+26 \iff x^2-8x+16=44 \iff (x-4)^2=44

7 0
3 years ago
The complement of an angle measures 20 more than the angle. Find the number of degrees in the angle
padilas [110]
Let the measure of its complement be x°.
then, measure of angle = (x + 20)°. and measure of angle = (35 + 20)° = 55°
6 0
3 years ago
Read 2 more answers
Ed is 7 years older then ted Ed's age is also 3/2 times ted's age how old are ed and ted ​
Rasek [7]

Answer:

if i'm right ted is 14 and ed is 21

Step-by-step explanation:

if ed is 7 years older than ted and is 3/2 times eds age, than we have to find out how much dose 2 represent in the equation 3/2 so we know that ed is seven years older than ted. so that means that if the equation 3/2 was 1/2, 1 would represent 7 years. (i hope your following me) so if 1 represents 7 than 2 must represent 14 and that would be the age of ted because in the equation 3/2 the 2 would represent teds age. and if the 2 represents teds age than 3 would be eds age. so 7 x 3 = 21.  (this is my first time answering a question so sorry if i'm confusing)

5 0
3 years ago
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