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4 years ago

What is y in this equation 6x+5y=-15

Mathematics

2 answers:

marishachu [46]4 years ago

5 0

Answer:

y= -3 -6x/5

Step-by-step explanation:

6x+5y=-15

-6x -6x

-----------------------------------

5y = -15 - 6x

divide both sides by 5

5y/5= -15/5 - 6x/5

y= -3 -6x/5

Dennis_Churaev [7]4 years ago

5 0

Answer:

6x + 5y = -15. Y = 3

Step-by-step explanation:

1. 6*x + 5*y = -15

x = -5

y = 3

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Simplify the following. 8 × -7

Jlenok [28]

Answer:

8*-7= -56

Step-by-step explanation:

How I solved it in my head

8*6= 48

48+7= 56

If you multiply any number with a negative, the answer becomes a negative

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3 years ago

A study conducted by a major milk manufacturer showed that 83% of American teenages prefer drinking milk to drinking soda. What

SCORPION-xisa [38]

The statistic can't be true because the study was conducted by a major milk manufacturer, they wouldn't want to have a negative outlook on their product since it could lead to a potential loss of market value.
Another reason why this statistic can't be trusted is that we don't know how many or groups of teens were surveyed. They could have gone to their faithful customers for all we know, and/or it could have been more people of one gender to the other or lack of diversity overall.
They could have tried to appeal to parents and teens to drink more milk and that it's healthy to make them buy more of it, lots of companies do that.

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3 years ago

The circumference of a circle is 15n cm what is the area of the circle in terms of n

Mice21 [21]

Answer:

Area of circle is $\dfrac{225n^{2}}{4\pi} cm^{2}$

Step-by-step explanation:

Formula for circumference of circle is given as,

$C=2\pi r$

Given that C = 15 n cm,

Substituting the value,

$15n=2\pi r$

Solving above equation for r, divide both side by $2\pi$

$\dfrac{15n}{2\pi}=\dfrac{2\pi r}{2\pi}$

Simplifying,

$\dfrac{15n}{2\pi}=r$

Formula for area of circle is given as,

$A=\pi r^{2}$

Substituting the value of r,

$A=\pi \left(\dfrac{15n}{2\pi}\right)^{2}$

Squaring the parenthesis,

$A=\pi \left(\dfrac{225n^{2}}{4\pi^{2}}\right)$

Cancelling out the common term,

$A=\dfrac{225n^{2}}{4\pi}$

Therefore, area of circle in terms of n is $A=\dfrac{225n^{2}}{4\pi} cm^{2}$

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4 years ago

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Vanyuwa [196]

Answer:

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Step-by-step explanation:

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3 years ago

A physical education teacher plans to divide the seventh graders at Wilson Middle School into teams of equal size of year-ending

Crank

Step-by-step explanation:

Consider the provided information.

The total number of students are: 24+26+21=71

He wants each team will have the same number of students between 5 and 9.

The number between 5 to 9 are 6, 7 and 8.

The number 71 is a prime number so we need to divide the 71 students in group so that minimum students left without team.

Dividing 6 students in each group.

Number of teams: $\frac{71}{6}$ = 11 teams and 5 students.

Dividing 7 students in each group.

Number of teams: $\frac{71}{7}$ = 10 teams and 1 students.

Dividing 8 students in each group.

Number of teams: $\frac{71}{8}$ = 8 teams and 7 students.

Thus, we can not divide 71 students into equal teams, but 70 divided by 7 gives the least students left out i.e 10 teams each with 7 students and only 1 student will remain at last.

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3 years ago