3 years ago

I NEED HELP PLEASE (BE SERIOUS AND RIGHT ANSWERS ONLy)

Mathematics

2 answers:

True [87]3 years ago

5 0

567 x 0.20 = 113.4
Closest Answer = 110

professor190 [17]3 years ago

3 0

Answer:

The closest answer would be 110

Step-by-step explanation:

I am sorry I am late but I hope this helps

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For which positive integer values of $k$ does $kx^2+20x+k=0$ have rational solutions? Express your answers separated by commas a

Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

$k {x}^{2} + 20x + k = 0$

The discriminant of this equation is given by;

$D = {b}^{2} - 4ac$

where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

${20}^{2} - 4 \times k \times k = 0$

Simplify to get:

$400 - 4 {k}^{2} = 0$

This implies that:

$400 = 4 {k}^{2}$

$100 = {k}^{2}$

Take square root to get:

$k = \pm\sqrt{100}$

$k = \pm10$

$k = - 10 \: or \: k = 10$

3 0

2 years ago

My number has more tens blocks than ones blocks. My number name starts with fifty.

ozzi

Couldn't it be 54, 53 52, or 51

5 0

2 years ago

Read 2 more answers

DVDs can be made in a factory in Colorado at the rate of 10 DVDs per $1.50, but the factory costs $100,000 to build. If they mak

12345 [234]

Answer:

1 DVD costs 15 cents.

I million DVDs cost 150,000 dollars.

Step-by-step explanation:

If 20 DVDs ------ $3

then, 1 DVD----------- x

20x = 3

x = 3/20

x = 0.15

1 DVD costs 15 cents

i already did this problem in one of my quizzes

3 0

2 years ago

Abigail and Spencer calculate the slope of the line between the points (3,-1) and (5,4) in different ways. Abigail calculates th

Annette [7]

Abigail and Spencer are correct, Lauren is incorrect.

8 0

2 years ago

PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!!

KonstantinChe [14]

Step-by-step explanation:

RS = 8 × cos(61°) = 2.9 [1 dp] = 3cm

6 0

3 years ago