Ask question

Ask question

All categories

2 years ago

11

Question 7 of 10

1 answer:

klemol [59]2 years ago

4 0

I think the answer is C. 45 units

You might be interested in

QRST is a rectangle. If RT = 5x – 5 and SQ = x + 11, find the value of x.

Hatshy [7]

5x - 5 = x + 11
5x = x + 16
4x = 16
x = 4

8 0

3 years ago

Read 2 more answers

What is the solution set of x2 + 5x + 1 = 0?

DerKrebs [107]

Answer:

$\huge\boxed{\left\{-\dfrac{5+\sqrt{21}}{2};\ \dfrac{-5+\sqrt{21}}{2}\right\}}$

Step-by-step explanation:

$x^2+5x+1=0\\\\\text{Use the quadratic formula:}\\\\\text{For}\ ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\\text{if}\ \Delta < 0,\ \text{then the equation has no real solution}\\\text{if}\ \Delta=0,\ \text{then the equation has one real solution}\ x=\dfrac{-b}{2a}\\\text{if}\ \Delta>0,\ \text{then the equation has two real solution}\ x=\dfrac{-b\pm\sqrt{\Delta}}{2a}$

$\text{We have}\\\\a=1,\ b=5,\ c=1\\\\\Delta=5^2-4(1)(1)=25-4=21>0\\\\x=\dfrac{-5\pm\sqrt{21}}{2(1)}=\dfrac{-5\pm\sqrt{21}}{2}$

3 0

3 years ago

5/16 as a decimal..?

madam [21]

Answer:

0.3125

Step-by-step explanation:

type that into a calculator

7 0

2 years ago

Read 2 more answers

The areas of two similar triangles are 72dm2 and 50dm2. The sum of their perimeters is 226dm. What is the perimeter of each of t

Digiron [165]

Answer:

123 3/11 dm
102 8/11 dm

Step-by-step explanation:

The ratio of the linear dimensions (perimeter) is the square root of the ratio of area dimensions, so the larger : smaller ratio is ...

√(72/50) = √1.44 = 1.2

The sum of ratio units is 1.2 + 1 = 2.2, so each ratio unit stands for ...

(226 dm)/2.2 = 102 8/11 dm . . . . . the perimeter of the smaller triangle

Then the perimeter of the larger triangle is ...

1.2 × 102 8/11 dm = 123 3/11 dm . . . . the perimeter of the larger triangle

6 0

3 years ago

Read 2 more answers

Area of the trapezoid

Vanyuwa [196]

A=1/2(b+b)•h
A=1/2(18+24)•8
A=1/2(42)•8
A=21•8
A=168ftsq

5 0

3 years ago