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3 years ago

I need help with this

Mathematics

2 answers:

Margarita [4]3 years ago

4 0

Answer:

B, 1/7

Step-by-step explanation:

divide numerator and denominator by 8

Bezzdna [24]3 years ago

4 0

Answer:

It would be $\frac{1}{7}$

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a car travels along a straight road heading east for one hour, then traveling for 30 minutes on another road that leads northeas

My name is Ann [436]

Answer:

55.96 miles

Step-by-step explanation:

Distance = Speed X time

Car first moved east for 1 hr , distance = 40 x 1 = 40 miles

Car then moved north-east for 30 min, distance = 40 x 0.5 = 20 miles

From trigonometry,

sin 45 = $\frac{y}{20}$ ; y = 20 sin 45 ; y= 14.14 miles

cos 45 = $\frac{x}{20}$ ; x = 20 cos 45 ; x = 14.14 miles

using Pythagoras theorem;

$z^{2}$ = $y^{2}$ + $(40+x)^{2}$

= $14.14^{2}$ + $(40+14.14)^{2}$

= 3131.08

$z^{2}$ = $\sqrt{3131.08}$

z = 55.96 miles

6 0

3 years ago

A model rocket is launched with an initial upward velocity of 60 m/s. The rocket's height h (in meters) after t seconds is given

Vedmedyk [2.9K]

Answer:

0.47 and 11.53

Step-by-step explanation:

h = 60t − 5t²

27 = 60t − 5t²

5t² − 60t + 27 = 0

Quadratic formula:

x = [ -b ± √(b² − 4ac) ] / 2a

t = [ -(-60) ± √((-60)² − 4(5)(27)) ] / 2(5)

t = (60 ± √3060) / 10

t = 0.47 or 11.53

3 0

3 years ago

2y+7z-2z+4y+8+y+2 Combine Like Terms

Andrew [12]

Answer:

7y+5z+10

Step-by-step explanation:

7y+5z+10

8 0

2 years ago

Read 2 more answers

Identify the slope (m) and y-intercept (b) of each linear equation.<br> 52. 3x+4y=24

nekit [7.7K]

Answer:

Step-by-step explanation:

[1] 3x - 4y = -24

[2] -x - 16y = -52

Graphic Representation of the Equations :

-4y + 3x = -24 -16y - x = -52

Solve by Substitution :

// Solve equation [2] for the variable x

[2] x = -16y + 52

// Plug this in for variable x in equation [1]

[1] 3•(-16y+52) - 4y = -24

[1] - 52y = -180

// Solve equation [1] for the variable y

[1] 52y = 180

[1] y = 45/13

// By now we know this much :

x = -16y+52

y = 45/13

// Use the y value to solve for x

x = -16(45/13)+52 = -44/13

Solution :

{x,y} = {-44/13,45/13}

8 0

3 years ago

Sandy has 27 roses, 9 daisies, and 18 tulips. She wants to arrange all the flowers in bouquets. Each bouquet has the same number

AlekseyPX

Answer:

The greatest number of flowers that could be in a bouquet is 9 flowers

Step-by-step explanation:

We solve the above question using Greatest Common Factor method. We find the factors of 27, 9 and 18. The greatest factor common to the 3 number is our answer.

The factors of 9 are: 1, 3, 9

The factors of 18 are: 1, 2, 3, 6, 9, 18

The factors of 27 are: 1, 3, 9, 27

Then the greatest common factor is 9.

The greatest number of flowers that could be in a bouquet is 9 flowers

5 0

3 years ago

I need help with this ​

I need help with this