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3 years ago

to make dough, reba needs 2 1 / 2 cups of flour. how much flour does she need to make 5 batches of dough? explain

Mathematics

2 answers:

ANEK [815]3 years ago

7 0

The simplest way is to convert 2 1/2 to decimal 2,5 then multiply by 5 2.5 x 5=12.5 or 12 1/2 cups of flour

stealth61 [152]3 years ago

4 0

2 1/2 * 5 = 12 1/2 cups of flour are needed to make 5 batches

5/2 * 5/1=25/2 or 12 1/2 cups

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16 = –d + 6 A. 10 B. –10 C. –9 D. –15

just olya [345]

16 = -d + 6 |-6

10 = -d |change signs

d = -10

Answer: B. -10

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3 years ago

A regular human hand contains 27 different bones. there are 206 bones altogether in the human body approximately what percent of

laila [671]

Hand: 27 bones
Body: 206 bones

Percent of bones in hand of all human body is expressible by 27 divided by (/) 206 times (*) 100.

27/206=0.13*100=13%

Roughly 13% of bones in the body is in one human hand.

26% in 2 hands. Expressible by 13%*2.

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3 years ago

Why is the equation y = 5x - 10 not proportional?

Kryger [21]

Answer:

x=2

Step-by-step explanation:

to find x- intercept substitute y=0

move variable to the left hand side and change its sign -5x=-10

then divide both sides of the equation by -5

and the final answer is x=2

hope this helps!

4 0

3 years ago

Cindy shoots a bottle rocket straight up into the air such that its height h, in feet, at time t, in seconds, is given by the fu

dezoksy [38]

Answer:

t = [0.493,4.2]

Step-by-step explanation:

The height of the rocket straight up into the air is given by :

$h(t)=-16t^2+85t+5$

We need to find the interval the rocket be at least 43 feet above the ground.

$43\ge -16t^2+85t+5\\\\t\ge 0.493\ and\ t\le 4.82\ s$

So, the required interval during which the rocket is at least 43 feet above the ground is [0.493,4.2].

6 0

3 years ago

HELP PLEASE!!

seropon [69]

Answer:

BD = 1 unit

AD = 1 unit

AB = 1.6 units

AC = 1.6 units

Step-by-step explanation:

In the picture attached, the triangle ABC is shown.

Given that triangle ABC is isosceles, then ∠B = ∠C

∠A + ∠B + ∠C = 180°

36° + 2∠B = 180°

∠B = (180° - 36°)/2

∠B = ∠C = 72°

From Law of Sines:

sin(∠A)/BC = sin(∠B)/AC = sin(∠C)/AB

(Remember that BC is 1 unit long)

AB = AC = sin(72°)/sin(36°) = 1.6

In triangle ABD, ∠B = 72°/2 = 36°, then:

∠A + ∠B + ∠D = 180°

36° + 36° + ∠D = 180°

∠D = 180° - 36° - 36° = 108°

From Law of Sines:

sin(∠A)/BD = sin(∠B)/AD = sin(∠D)/AB

(now ∠A = ∠B)

BD = AD = sin(∠A)*AB/sin(∠D)

BD = AD = sin(36°)*1.6/sin(108°) = 1

3 0

3 years ago