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olga55 [171]
4 years ago
7

A recipe for pizza dough calls for 3 teaspoons of salt for every 4 cups of flour how many teaspoons of salt will be needed for 2

8 cups of flour
Mathematics
1 answer:
anygoal [31]4 years ago
4 0

Answer:

Step-by-step explanation:

proportion time...

3 teaspoons salt to 4 cups flour = x teaspoons salt to 28 cups flour

 3        x

----- = ----- cross multiply

4        28

(4)(x) = (3)(28)

4x = 84

x = 84/4

x = 21 <==== 21 teaspoons of salt are needed

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Nat2105 [25]

Answer:

36%

Step-by-step explanation:

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4 0
3 years ago
5/8x + 10 for x = -8
Afina-wow [57]

Answer by JKismyhusbandbae:

\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a\\=-\frac{5}{8}\cdot \:8+10\\\frac{5}{8}\cdot \:8=5\\=-5+10\\\mathrm{Add/Subtract\:the\:numbers:}\:-5+10=5\\=5

5 0
4 years ago
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Given the equation f(x)=-2x²+4x+6 find the average rate of change from x=1 and x=2​
emmainna [20.7K]

Answer:

16

Step-by-step explanation:

1) Plug x=1 into equation

f(x) = -2(1)²+4(1)+6

f(x) = -2²+4+6

f(x) = 4+4+6

y = 14

(1,14)

2) Plug in x=2 into equation

f(x) = -2(2)²+4(2)+6

f(x) = -4²+8+6

f(x) = 16+8+6

y = 30

(2,30)

3) Use slope formula (\frac{y2-y1}{x2-x1})

\frac{30-14}{2-1}

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16

8 0
2 years ago
Prove cotA+cotB+cotC &gt;= square root of 3
Zigmanuir [339]
<span>Given cotA + cotB + cotC = sqrt3
to prove triangle ABC is equilateral 
we prove this by assuming ABC to be equialteral and establishing the truth 
of the statement cotA + cotB + cotC =sqrt3 

since ABC is equialteral angleA=angleB=angleC=60 degrees 
cotA=cotB=CotC = cot60= 1/sqrt3 
therefore cotA + cotB + cotC = 1/sqrt3 + 1/sqrt3 + 1/sqrt3 
=3/sqrt3 
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7 0
3 years ago
Plz Answer this question ASAP!
nydimaria [60]

Answer:

564 tiles

Step-by-step explanation:

there are many ways to solve this soo...

1. convert to centimetres (there are 100 centimetres in 1 metre)

2. the square tiles area = 20*20=400cm

2. find the large area (4.8m x 3.8m or 480cm x 380cm)

480 *380=182400cm

2. find the two smaller areas (1.2m x 1.8m or 120cm x 180cm)

2(120*180)=4.3200cm

3. add to find total area

182400 +43200=225600cm

4. find how many tiles are needed

\frac{225600}{400}= 564 tiles

8 0
3 years ago
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