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Mashcka [7]
3 years ago
9

9) y = 7x - 20 3x + 8y = 17 For substitution

Mathematics
1 answer:
xenn [34]3 years ago
3 0
X=3
y=1
Use substitution method starting with the first equation substitute y in the second equation

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Solve for x.<br> X + 142<br> 135°
Lyrx [107]

Answer:

X=-7

Step-by-step explanation:

X + 142=135°

X=135-142

X=-7

So the value of X is -7

4 0
3 years ago
Write an algebraic expression for each word expression.
coldgirl [10]

Answer:

27) 14x

28) n/9

29) A number, z, divided by 11

30) The sum of a number, z, and 11

7 0
3 years ago
A child weighing 22.5 kg has an IV order for Vancomycin Calculate the q8h per dose dosage if the label states that
vodka [1.7K]

Answer:

q8h dosage = 112.5mg

Step-by-step explanation:

Given

Child Weight = 22.5 kg

Daily Intravenous Dosage = 40mg/kg

Type of Dose = q8h

Required

Calculate the q8h per dose

We start by calculating the total daily dosage in mg

This is calculated by multiplying the child weight by the intravenous dosage

Daily Dosage = 22.5kg * 40mg/kg

Daily Dosage = 900mg

This implies that the body weight requires 900 mg daily

Next is to calculate the q8h dosage

q8h means every 8 hours.

q8h dosage = 900mg/8

q8h dosage = 112.5mg

6 0
3 years ago
What are the zeros of the quadratic function f(x) = 6x^2 + 12x - 7?
Sergeeva-Olga [200]

Answer:

-12 + √(144- 4(-42)/12

-12 + √312/12

-12 + 17.6 / 12

= +.47 and -.47

4 0
3 years ago
In a dilation with a scale factor of 3/4,the image is __________ the preimage
3241004551 [841]
I would say smaller than because you would be dilating the image by a number less than 1, which is making the image smaller.
3 0
3 years ago
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