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3 years ago

PLEASE HELP!! 15 points!! Use the graph to complete the statements that follow.

Mathematics

1 answer:

Tomtit [17]3 years ago

5 0

Part one is 2 seconds part two is one second then three seconds

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Thomas drive from junction 2 to junction 3 on a road . The distance between the junctions is 12 miles and it takes 15 minutes. H

Sholpan [36]

Answer:

Hanna

Step-by-step explanation:

In order to find out how fast Thomas has drove as compared to Hanma we have to compare the speed of each other,

Speed of Hanna = 50mph (as given in ur question)

Speed of Thomas

Since the unit of time of the distance traveled by Thomas is not same as that of Hanna we have to convert the minutes into hour,

Distance traveled = 12miles

Time taken = 15minutes

Speed = 12miles/15mim

Converting minutes into hours we have to multiply by a number whose product will be 60 and that will 4

that is 15 times 4 is 60. But to make the ratio equal

we have to multiply the distance too by 4.

= 12*4/15*4

=48 miles/60minutes

=48miles/1hour

=48mph

Comparing both speeds

Speed of Hanna compared to Speed of Thomas,

50mph > 48mph

Hence, Hanna has the faster speed.

7 0

2 years ago

What is the vertex of the graph of #y=x^2+3x-4#?

borishaifa [10]

To find the x value of the vertex we do:

x = $\frac{-b}{2a}$
if your quadratic function is in the form ax² + bx + c = y

x = $\frac{-3}{2(1)}$
x = $\frac{-3}{2}$

Now we plug this x into the equation and solve for y.

y = $(\frac{-3}{2}) ^{2} + 3( \frac{-3}{2} ) + 4$
y = $\frac{9}{4} - \frac{9}{2} + 4$
y = $\frac{9}{4} - \frac{18}{4} + 4$
y = $\frac{-9}{4} + 4$
y = $\frac{-9}{4} + \frac{16}{4}$
y = $\frac{7}{4}$

Your vertex (if my math is correct) is at $( \frac{-3}{2}, \frac{7}{4} )$

8 0

3 years ago

2x(8+7)-6/2x(9-3) evaluate

Katarina [22]

Ok so assuming that the 'x' means multiply and not 'x' as in placeolder we do

PEMDAS
parenthaseees
exponents
multipilcation or division
additon or subtraction

parethasees simplify first
(8+7)=15

(9-3)=6

now we have
2x(15)-6/2x(6)
multiply
2x15=30

6/2x6=36/2=18

now we have
30-18
12

answer is 12

6 0

3 years ago

Read 2 more answers

What is the rate of change? X у 2. 0 3 0 4 0

Nimfa-mama [501]

Answer:

$m=0$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Find points from chart.

Point (2, 0)

Point (3, 0)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m. Rate of change and slope are identical.

Substitute [SF]: $m=\frac{0-0}{3-2}$
Subtract: $m=\frac{0}{1}$
Divide: $m=0$

7 0

3 years ago

the sum of three decimal numbers is 6 exactly one of the numbers is less than 1 what could the numbers be

sleet_krkn [62]

The 3 numbers could be 0.5, 1.1 and 4.4.

In the list above, there is only 1 number less than 1. It is 0.5.
The other 2 numbers are larger than 1.

If you add up the 3 numbers you will have exactly 6.

0.5 + 1.1 + 4.4 = 6

8 0

4 years ago