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Ierofanga [76]
2 years ago
10

When Dylan checks their school lunch account, the

Mathematics
1 answer:
Marrrta [24]2 years ago
5 0

Answer: 20

Step-by-step explanation:

56-40=16

So, he spent $16 on 8 lunches.

This means each lunch was $2.

So, 2 times a number will give you $40 which is 20.

Therefore, he can buy 20 more lunches before he runs out of money.

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100 points for the CORRECT ANSWER
OLga [1]

Answer: D

Step-by-step explanation:

It is a linear function and the slope is negative and the y intercept is negative.

4 0
3 years ago
Read 2 more answers
2sinx / cos3x = tan3x - tanx -verify the identity-
scoundrel [369]

Answer:

cos3x+tan3x=0  

⟹cos3x=−tan3x

⟹cos3x=−sin3xcos3x

⟹cos23x=−sin3x

⟹1−sin23x=−sin3x

⟹sin23x−sin3x−1=0

This is a quadratic equation in sin3x.

sin3x=−(−1)±(−1)2−4×1×(−1)−−−−−−−−−−−−−−−−−√2×1

sin3x=1±5–√2

If x takes real values, the upper sign must be rejected.

sin3x=1−5–√2

⟹3x=nπ+(−1)nsin−11−5–√2

⟹x=13[nπ+(−1)nsin−11−5–√2]

Step-by-step explanation:

Hope this kind of helps

6 0
2 years ago
Calculus<br> The following curve passes through (3,1)<br> Using linear lineralization
Novay_Z [31]

Answer:

Option 1.1

Step-by-step explanation:

The linearization of a curve implies the use of calculus to find the local value for the derivative and approximating the function by the use of the formula

F(x) \approx F(x_0) + F'(x_0)(x-x_0)

The function is given in such way that it's much easier to find the derivative by implicit differentiation than isolating any of the variables

2x^2y+y=2x+13

Differentiating with respect to x, we have

4xy+2x^2y'+y'=2

Computing y' in the given point (3,1) we have

4(3)(1)+2(9)y'+y'=2

y'=\frac{2-12}{19}

y'=-\frac{10}{19}

The function will be approximated with the expression

F(x) = 1 -\frac{10}{19}(x-3)

To find the approximate value for x=2.8

F(2.8) = 1-\frac{10}{19}(-0.2)=1.1

The correct value is the option 1.1

6 0
3 years ago
Reduce anwers to terms simplify improper fractions as mixed<br> 4 1/4<br> -2 3/4<br> =
devlian [24]

Answer:

Improper: 3/2

Mixed: 1 1/2

Step-by-step explanation:

I believe this is right, if not feel free to critique me and I will fix it. I'm sorry in advance if it is incorrect.

3 0
3 years ago
Carlos has 10 more dollars and Jeremy Jeremy has $5 more than the show all together they have $80 what part of 80 does Michelle
blsea [12.9K]
She would have 60 dollars.
5 0
3 years ago
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