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3 years ago

Two trains leave the station at the same time, one heading west and the other east. The westbound train travels at

Mathematics

2 answers:

Molodets [167]3 years ago

8 0

miles per hour. How long will it take for the two trains to be
272

mash [69]3 years ago

6 0

Train1 = 90 miles per hour
train 2 = 80 miles per hour

90 + 80 = 170

272 / 170 = 1.6 hours = 1 hour 36 minutes

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what are the angle measures of the triangle? a)30, 60, and 90 b)45, 45, and 90 c)60,60,and 60 d)they cannot be determined.

GuDViN [60]

the right answer is actually 30,60,90, I got the answer right on the test

3 0

3 years ago

10 of the students in Miss Ransom‘s class play an instrument. These 10 students make up 40% of the class how ,many students are

Mashutka [201]

Answer:

250 students

Step-by-step explanation:

Given data

Let the total number of students be x

Number of students that plays instrument = 10

Hence

40% of x = 10

40/100*x= 100

0.4x=100

x=100/0.4

x= 250

Hence there are 250 students in total

3 0

2 years ago

Solve the equation by factoring.

Delicious77 [7]

Factorizing an expression involves writing the expression in simpler forms

The values of z are $z = \frac 15$ or $z=4$

The equation is given as:

$5z^2 - 21z + 4 = 0$

Expand the equation

$5z^2 - 20z -z + 4 = 0$

Factorize the expression:

$5z(z - 4) -1(z - 4) = 0$

Factor out z - 4

$(5z - 1)(z - 4) = 0$

Split

$5z -1 = 0$ or $z - 4 = 0$

Solve for z

$z = \frac 15$ or $z=4$

Hence, the values of z are $z = \frac 15$ or $z=4$

Read more about factorization at:

brainly.com/question/11579257

6 0

2 years ago

Read 2 more answers

If x = –3 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the e

kompoz [17]

$\text{ if } \Delta=0\text{ then there is one x-intercept : }x=-\dfrac{b}{2a}\\\\
\text{ if } \Delta\ \textless \ 0\text{ then there are no x-intercept : } x=\varnothing\\\\
\text{ if } \Delta>0\text{ then there are two x-intercept : }x_1,x_2=\dfrac{-b\pm\sqrt{\Delta}}{2a}\\\\$

Answer : The discriminant is 0

5 0

3 years ago

Read 2 more answers

Help me pls this one is hard

ella [17]

Answer:

2-120

4-240

7-420

Step-by-step explanation:

there are 60 people in each tour group so you multiply 60 by the number of tour groups.

ordered pairs:

(2,120)

(4,240)

(7,420)

hope this helped you!

have a great day!!

7 0

3 years ago

Read 2 more answers