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2 years ago

I know the answer just double checking Expand5(y+7)

Mathematics

1 answer:

vekshin12 years ago

8 0

X=5(y+7) or x=5y+35
sorry if I’m wrong

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vance ate a salad and 4/5 of a turkey burger for dinner. the salad contained 80 calories and his entire meal contained 440 calor

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The total calorie of the entire meal is 440 and this is the sum of the calorie contained in 4/5 of the calories in the burger and the calories in salad. If we let x be the amount of calorie in the burger, the equation that would best represent the scenario is,
440 = 80 + 4x/5

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3 years ago

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3 years ago

A bird of species? A, when? diving, can travel six times as fast as a bird of species B top speed. If the total speeds for these

Inessa05 [86]

Answer:

Maximum speed of bird A is $192\,\,\frac{mi}{h}$

Maximum speed of bird B is $32\,\,\frac{mi}{h}$

Step-by-step explanation:

This is a problem with two unknowns: Max speed of bird A (we name that "A"), and max speed of bird B (we call that "B"). Now we can create two equations with these two unknowns, based on the info provided:

Equation 1): based on the phrase "bird A can travel six times as fast as bird B" we write:

$A=6\,*\, B\\A=6B$

Equation 2): based on the phrase; "the total speeds for these two birds is 224 miles per hour", we write:

$A+B=224\,\,\frac{mi}{h}$

Now, we use the first equation to substitute A in the second equation, ad then solve for the unknown B:

$A+B=224\,\,\frac{mi}{h}\\(6B)+B=224\,\,\frac{mi}{h}\\7B=224\,\,\frac{mi}{h}\\B=\frac{224}{7} \,\,\frac{mi}{h}\\B=32\,\,\frac{mi}{h}$

Now we can solve for the other unknown "A" using the substitution equation and the value of B we just found:

$A=6B\\A=6\,(32\,\,\frac{mi}{h})\\A=192\,\,\frac{mi}{h}$

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2 years ago

I know the answer just double checking Expand5(y+7)​

I know the answer just double checking Expand5(y+7)