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3 years ago

I need help i dont understand

Mathematics

1 answer:

miss Akunina [59]3 years ago

8 0

A Variable is a symbol for a number we don't know yet. It is usually a letter like x or y.

A number on its own is called a Constant.

A Coefficient is a number used to multiply a variable (4x means 4 times x, so 4 is a coefficient)

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please help! this is for a grade and its overdue!!!!!!!! If the blueprint is drawn on the coordinate plane with vertices (1, 5)

viktelen [127]

Answer:

50 \sqrt[]{2} feet

Step-by-step explanation:

Given the vertices (1, 5) and (11, 15) for the corners labeled with red stars, the diagonal of the square C will be the length of the line joining the two vertices.

Using the Distance Formula:

Since 1 Square Unit = 25 Square Feet

1 Unit =5 feet

Therefore, the length of the diagonal

7 0

3 years ago

Read 2 more answers

Solve by completing the square :<br><br> 4x^2-12x+7=0

Amiraneli [1.4K]

Answer:

$x=\frac{3}{2}\pm\frac{\sqrt{2}}{2}}$

Step-by-step explanation:

we have

$4x^2-12x+7=0$

step 1

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$4x^2-12x=-7$

step 2

factor the leading coefficient

$4(x^2-3x)=-7$

step 3

Complete the square. Remember to balance the equation by adding the same constants to each side

$4(x^2-3x+1.5^2)=-7+1.5^2(4)$

$4(x^2-3x+2.25)=2$

simplify

$(x^2-3x+2.25)=0.5$

step 4

Rewrite as perfect squares

$(x-1.5)^2=0.5$

step 5

take square root both sides

$x-1.5=\pm\frac{1}{\sqrt{2}}$

Convert 1.5 in a fraction number

$x-\frac{3}{2}=\pm\frac{1}{\sqrt{2}}$

$x=\frac{3}{2}\pm\frac{\sqrt{2}}{2}}$

3 0

3 years ago

If the rectangle below has an area of 32 sq. units, what is the area of the triangle?

vesna_86 [32]

Answer:

B. 16 sq. units

Step-by-step explanation:

If you divide the rectangle, you will get 2 triangles. Therefore you will divide your answer from the rectangle by two.

8 0

4 years ago

Read 2 more answers

Pythagorean theorum

tester [92]

A^2+b^2=c^2
Plug in the three numbers into the formula. I hope this helps

3 0

3 years ago

Patty counted 250 chocolate chips on a tray of cookies. The actual amount of chocolate chips on the tray were 265. What is the p

andrey2020 [161]

Answer:

percent error=6%

Step-by-step explanation:

Step one:

given data

Patty counted 250

The actual amount of chocolate chips on the tray were 265

Required

The percent error

Step two:

The formula is

percent error= actual-expected/expected*100

percent error= 265-250/250*100

percent error=15/250*100

percent error=0.06*100

percent error=6%

3 0

3 years ago