I need help this question I only need to pick 3

Mathematics

1 answer:

BARSIC [14]4 years ago

8 0

A. is 1
b. is 13
c. x= 2.549

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Sin(x)= --0.7 <br> solve in degrees

Rzqust [24]

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One serving of soybeans contains 14 grams of protein and 8 grams of fat. One serving of rice contains 4 grams of protein and 1/2

mina [271]

Answer: 1.8 servings of soybean and 1.2 servings rice will be needed.

Step-by-step explanation:

Let x be the number of soybeans and y be the number of rice.

Then , According to the question , we have

$14x+4y=30\\\Rightarrow\ 7x+2y=15..................................(1)\\\\ 8x+\frac{1}{2}y = 15\\\Rightarrow\ 16x+y=30.............................(2)$

Multiply 2 on both the sides of equation (2), we get

$32x+2y=60................................(3)$

Subtract equation (2) from equation (3), we get

$25x=45\\\\\Rightarrow\ x=1.8$

Put x = 1.8 in equation (2), we get

$16x+y=30\\\\\Rightarrow\ y=30-16x\\=30-16(1.8)=1.2$

Hence, 1.8 servings of soybean and 1.2 servings rice will be needed.

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4 years ago

is a stem and leaf plot or a bar graph appropriate to display the number of students at three schools? explain your choice

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Bar graphs are used to compare data. To be more specific, you should use a double bar graph because:

Double bar graphs have 2 or more bars for compariong
Bar graphs are usually used to show length

Answer: Double bar graph (bar graph)

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