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2 years ago

Help me I will mark brainliest ....

Mathematics

1 answer:

ser-zykov [4K]2 years ago

5 0

Answer:

1 1/2 eggs

1/2 almond paste

1/8 vanilla

3/8 sugar

Step-by-step explanation:

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If line b is perpendicular to line a, and line c is

emmasim [6.3K]

Answer:

Step-by-step explanation:

4 0

3 years ago

Braving blizzard conditions on the planet Hoth, Luke Skywalker sets out at top speed in his snowspeeder for a rebel base 4800 mi

____ [38]

Answer:

v_top = 2400 mi/hr

v_w = 400 mi/h

Step-by-step explanation:

Given:

- Total distance D = 4800 mi

- Headwind journey time taken t_up= 3 hr

- Tailwind journey time taken t_down = 2 hr

Find:

Find the top speed of Luke's snow speeder and the speed of the wind.

Solution:

- The speed of Luke v_l is in stationary frame is given by:

v_l = v_w + v_l/w

Where,

v_w: Wind speed

v_l/w: Luke speed relative to wind.

- The top speed is attained on his returned journey with tail wind. We will use distance time relationship to calculate as follows:

v_top = D / t_down

v_top = 4800 / 2

v_top = v_down = 2400 mi/hr

- Similarly his speed on his journey up with head wind was v_up:

v_up = D / t_up

v_up = 4800 / 3

v_up = 1600 mi/hr

- Now use the frame relations to find the wind speed v_w:

v_down = v_w + v_l/w

v_up = -v_w + v_l/w

- Solve equations simultaneously:

2400 = v_w + v_l/w

1600 = -v_w + v_l/w

4000 = 2*v_l/w

v_l/w = 2000 mi/h

v_w = 400 mi/h

7 0

3 years ago

How do I solve for the missing lengths?

Advocard [28]

Answer:

Part 4) $ER=3\ units$

Part 5) $DF=9\sqrt{10}\ units$

Part 6) $DE=30\ units$

Step-by-step explanation:

Part 4) Find ER

we know that

In the right triangle ERF

Applying the Pythagorean Theorem

$EF^2=ER^2+RF^2$

substitute the given values

$(3\sqrt{10})^2=ER^2+9^2$

solve for ER

$ER^2=(3\sqrt{10})^2-9^2$

$ER^2=90-81\\ER^2=9\\ER=3\ units$

Part 5) Find DF

we know that

In the right triangle DRF

Applying the Pythagorean Theorem

$DF^2=DR^2+RF^2$

substitute the given values

$DF^2=27^2+9^2$

$DF^2=810\\DF=\sqrt{810}\ units$

simplify

$DF=9\sqrt{10}\ units$

Part 6) Find DE

we know that

$DE=DR+RE$ ----> by segment addition postulate

we have

$DR=27\ units\\RE=ER=3\ units$

substitute

$DE=27+3=30\ units$

3 0

3 years ago

Four less than the product of a number and 7 is eight more than that number

GuDViN [60]

Answer:

Step-by-step explanation:

Replace the number with x, then the equation would be:

7x-4=x+8

7x-x=8+4

6x=12

6x/6=12/6

x=2

6 0

2 years ago

Pleaseeeeeee helppppl asap

cluponka [151]

Answer:

Step-by-step explanation:

Let's use the rule GEMDAS (Grouping, Exponents, Multiply, Divide, Add, Subtract) from left to right. Therefore, we will simplify the equation in the parentheses. $2^{3} = 8. (1-8= -7)$ . -(-7) creates a double negative, deeming the 7 positive, because when there is two negatives the number will turn into a positive. $7^{2}$ = 49, -3 x 4= -12. Therefore the final form of the equation will be 49 - 12 = 37.

Let me know if there are mistakes.

7 0

2 years ago