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2 years ago

When x=7 the equation is 26+x2-23

Mathematics

2 answers:

Gnesinka [82]2 years ago

8 0

Answer:

X=29

Step-by-step explanation:

klemol [59]2 years ago

3 0

Answer:

Step-by-step explanation:

Plug in the X.

26+7*2-2*3= 34

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5540 in scientific notation

never [62]

Answer:

Therefore, the decimal number 5540 written in scientific notation is 5.54 × 103 and it has 3 significant figures.

Step-by-step explanation:

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2 years ago

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What is the length of segment CD question mark

mars1129 [50]

Answer:

CD = two square root of 10 end square root

Step-by-step explanation:

To find the length of a segment, use the distance formula. Substitute the order pairs for the endpoints of the segment. CD has the end points (-7, -4) and (-1, -2).

$d = \sqrt{(y_2-y_1)^2 + (x_2-x_1)^2} \\\\d = \sqrt{(-4--2)^2 + (-7--1)^2} \\\\d = \sqrt{-2^2 + -6^2}\\\\d = \sqrt{4 + 36}\\\\d=\sqrt {40} = 2\sqrt{10}$

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3 years ago

(13) The Modern Grocery has cashews that sell for $5.00 a pound and peanuts that sell

bazaltina [42]

Answer:

solution:

x = pounds of cashews = 20

y = pounds of peanuts = 70

Step-by-step explanation:

x = pounds of cashews

y = pounds of peanuts

---

4.75x + 2.50y = 3.00*90

x + y = 90

---

put the system of linear equations into standard form

---

4.75x + 2.50y = 270

x + y = 90

5 0

2 years ago

Find a general solution of y" + 4y = 0.

klio [65]

Answer:

$y(x)=C_{1}cos2x+C_{2}sin(2x)$

Step-by-step explanation:

It is a linear homogeneous differential equation with constant coefficients:

y" + 4y = 0

Its characteristic equation:

r^2+4=0

r1=2i

r2=-2i

We use these roots in order to find the general solution:

$y(x)=C_{1}cos2x+C_{2}sin(2x)$

8 0

2 years ago

I need Immediate help, please solve the questions below

Reptile [31]

It is 160 ! I hope I could help

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2 years ago

When x=7 the equation is 26+x*2-2*3

When x=7 the equation is 26+x2-23