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kherson [118]
3 years ago
15

Will give brainliest! The value of y varies directly with x. When y = 30, x = 5. What is the value of y when x = 7.

Mathematics
2 answers:
lutik1710 [3]3 years ago
3 0

Answer:

42

Step-by-step explanation:

If we suppose the value is constant,

Divide 30/5 we get 6.

so now we know for every 1 x we get 6 y.

Multiply 6 times 7 = 42.

The value of y = 42 when x = 7.

LuckyWell [14K]3 years ago
3 0

Answer:

Y=42

Step-by-step explanation:

30÷5=6

so 7x6=42

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3. (07.04)
Naddik [55]

Answer:

The probability  that an applicant does not get a job if he or she has an interview is 20%.

Step-by-step explanation:

  • If the applicant has been interviewed, then she/he belongs to the group of 20 people that had an interview.
  • 16 of the 20 people who were interviewed were offered a job, which means that 4 of the 20 people interviewed were not offered a job.
  • Then, 4/20= 20% of the people who were intervied did not get a job, which means that the <u>probability that an applicant does not get a job if he/she were interviewed is 20%</u>.
  • Pat attention: this probability results from analysing the probability of getting a job once you have had an interview (this condition restricts our attention to the group of 20 people who had an interview, and not to the hole group of 500 people who did apply for the job).
5 0
3 years ago
The bases of the trapezoid are 6 and 10. The height is 4. Find the area.
kari74 [83]
<h2>Answer:</h2>

b. \ \boxed{32 \sq. \ units}

<h2>Step-by-step explanation:</h2>

A trapezoid is a quadrilateral where at least one pair of opposite sides are parallel. In a trapezoid, the both parallel sides are known as the bases of the trapezoid. So we have two bases, namely, b_{1}\,and\,b_{2}. Also, the height H of the trapezoid is the length between these two bases that's perpendicular to both sides. So the area of a trapezoid in terms of of b_{1},b_{2}\:and\:H is:

A=\frac{(b_{1}\text{+}b_{2})h}{2}

Since:

b_{1}=6, \ b_{2}=10, \ and \ H=4

The area is:

A=\frac{(6\text{+}10)4}{2}=\boxed{32 \sq. \ units}

6 0
3 years ago
Help please this i will mark brainliest please
solniwko [45]

Step-by-step explanation:

please complete your question

6 0
3 years ago
Please help me my aleks topics are due tomorrow and i will give you brainliest :(
aksik [14]

Answer:

a is 3x

b is 6(8y-5) and 6x8y-6x5

Step-by-step explanation:

first a is 3x

b is 6(8y-5) 6x8y-6x5

5 0
3 years ago
Plz help me solve this question ASAP without using algebra, Thank u‼️
VashaNatasha [74]

Let cost of 1 box of red pen = x

Let cost of 1 box of black pen = y

Gaga bought 5 red box and her sister 4 black box then total cost is given by

5x+4y

Given that total cost was $44

so equation will be 5x+4y=44...(i)

After exchange

Gaga= 4 red box + 1 Black box

Sister = 1 red box + 3 Black box

then cost for Gaga = 4x+1y

cost for sister = 1x+3y

Given that cost for both after exchange is same so we get

4x+1y = 1x+3y

or 4x-1x = 3y-1y

or 3x = 2y

or 3x/2=y ...(ii)

plug (ii) into (i)

5x+4y=44

5x+4(3x/2)=44

5x+12x/2=44

5x+6x=44

11x=44

x=4

Now plug value of x into (ii)

y=3x/2=3*4/2=12/2=6

Hence cost of 1 box of red pen = $4

And cost of 1 box of black pen = $6

---

If you want to get solution without solving both equations then just graph both equations and find the intersection point.

You will see that graph intersect at (4,6) which gives x=4, y=6

6 0
3 years ago
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