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2 years ago

5x + 3y, when x = 4, and y=-3

Mathematics

2 answers:

Pepsi [2]2 years ago

6 0

Answer:

5x+3y, when x=4 and y= -3

5(4)+3(-3)=

20+ (-9)=

Step-by-step explanation:

Hope this helps. :)

Montano1993 [528]2 years ago

3 0

Answer:

5x + 3y = 11

Step-by-step explanation:

x = 4 y = -3

=5x + 3y

=5(4) +3(-3)

=20 + (-9)

=11

When a number and variable are right beside each other it means that the number and the variable are being multiplied together, for example 5x. If x = 4 then it means that 5 and 4 are being multiplied.

(it might be wrong because I haven't done algebra in a long time)

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4. The area of a regular hexagon is 50 in. Find the length of a side. Round your answer to the nearest tenth.

Vikki [24]

Answer: 4.4

Step-by-step explanation:

The formula for calculating the area of regular hexagon is given as :

Area = $\frac{3\sqrt{3}}{2}$ $a^{2}$

Where a is the length of a side.

Substituting the value given , we have :

50 = $\frac{3\sqrt{3}}{2}$ $a^{2}$

50 x 2 = $3\sqrt{3}$ $a^{2}$

100 = $3\sqrt{3}$ $a^{2}$

Divide through by $3\sqrt{3}$

$a^{2}$ = $\frac{100}{3\sqrt{3}}$

$a^{2}$ = 19.24500897

Take the square root of both sides :

a = $\sqrt{19.24500897}$

a = 4.3869

To the nearest tenth

a = 4.4

4 0

2 years ago

52.85-9.09 rounded to the nearest one

Mkey [24]

53, and 9. Are the answers.

8 0

2 years ago

Solving system by elimination 7x+2y=24 8x+2y=30

icang [17]

7x+2y=24
-8x-2y=-30 (multiplied each side by -1)
-x = -6
x = 6

7x+2y=24
7(6)+2y=24
42+2y=24
2y = -18
y = -9

8 0

2 years ago

Read 2 more answers

Priya drew a circle whose area is 25 cm. Dan drew a circle whose diameter is 4 times the radius of Priya's circle. How many time

Vitek1552 [10]

Answer:

400

Step-by-step explanation:

first work out the radius of priya's circle with the equation a = $\pi r^{2}$

$25 = \pi r^{2}$

$\frac{25}{\pi } = r^{2}$

$r = \sqrt{\frac{25}{\pi } }$

we know the diameter of a circle is 2 times the radius so the diameter of priya's circle is 2x $\sqrt{\frac{25}{\pi } }$

this means that if the diameter of dan's circle is 4 times bigger it must be

8x $\sqrt{\frac{25}{\pi } }$

to find the radius of dan's circle we divide the diameter by to 2 to give

4x $\sqrt{\frac{25}{\pi } }$

then use the a= $\pi r^{2}$ equation again

$a= (4 \sqrt{\frac{25}{\pi } })^{2} \pi$

which equals 400

hope that helped

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2 years ago

-2 < n s6 n is an integer. What are the possible values of n?

alex41 [277]

This is what I found

4 0

2 years ago

5x + 3y, when x = 4, and y=-3​

5x + 3y, when x = 4, and y=-3