Anyone good with matrixes and matrices? please help me i need help with 10 questions and I need to raise my grade ASAP please

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Answer 1

Answer:

Answer:

what questions need to be done? We need to know the problems before we answer them. :/

Related Questions

The taxi driver charges $3.50 just to get in the cab and then $2.50 per mile. If Lisa travels m miles, which equationtells Lisa how much she will have to pay for her taxi ride, r?A r = 2.5 +3.5B = 3.5m + 2.5r= 2.5m + 3.5Dr= 2.5m - 3.5
Lucy buys a greeting card for $4.50 She then buys 5 postcards that all cost the same amount. The total cost is $7.00 How much is each postcard?
The average customer waiting time at a fast food restaurant has been 7.5 minutes. The customer waiting time has a normal distribution. The manager claims that the use of a new system will decrease average customer waiting time in the store. What is the null and alternative hypothesis for this scenario? (Ch10)A. H0: m =7.5 and H1:m ? 7.5B. H0: m <=7.5 and H1:m > 7.5C. H0: m >=7.5 and H1:m < 7.5D. H0: m <7.5 and H1:m >=7.5E. H0: m >7.5 and H1:m <= 7.5
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5/6 n=10 show me how to solve it please

Solve the system of equations.

6x - 5y = 15

X= y + 3

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point form (1, -2)
equation form x=1, y=-2

The perimeter of a square is 20, find the length of a diagonal. Round your answer to theearest tenth.

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Answer:

Step-by-step explanation:

Un recipiente cilíndrico tiene un diámetro de 160cm. y la misma altura. ¿Cuánto litros de agua puede caber?

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Respuesta:

3215360 cm³

Explicación paso a paso:

Dado que :

Radio = 160/2 = 80 cm

Altura, h = 160 cm

Volumen de un cilindro = πr²h

Volumen del cilindro = π * 80² * 160

Volumen = 3215360 cm³

Determine whether the triangles are similar. If so, write a similarity
statement.

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9514 1404 393

Answer:

ΔDEF ~ ΔHEJ

Step-by-step explanation:

The vertical angles at E are congruent, and the marked angles at F and J are congruent. The two triangles are similar by the AA postulate.

The given portion of the similarity statement names the angles in the order "unspecified", "vertical", and "50°". If we name those angles in the same order in the other triangle, the similarity statement becomes ...

ΔDEF ~ ΔHEJ

Answer:

$\triangle FED\sim \triangle JEH$

Step-by-step explanation:

Both pairs of vertical angles formed at point E are equal. Therefore, the two triangles share two angles. If two triangles share two angles, they must also share the third angle, since the sum of the interior angles of a triangle add up to 180 degrees. Therefore, all three angles of the two triangles are equal, which is a proof of similarity. $\implies \boxed{\triangle FED\sim \triangle JEH}$

Jeremy sprinted for 123 seconds and rested. Then he sprinted for 157 seconds, rested, and sprinted again for 195 seconds. Estimate the combined time he sprinted by rounding to the nearest ten and then adding the rounded numbers.

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480 aproxmately if you round the numbers then add them up

the radius of the cone is 1.75 inches, and it’s height is 3.5 inches. If the diameter of the bubble gum ball is 0.5 inches, what is the closest approximation of the volume of the cone that can be filled with flavored ice?

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Explanation:

The volume of a cone is:

$V_(c)=(1)/(3)\pi r^2 h \n \n \n Where: \n \n r:\text{Radius of the cone} \n \n h:\text{height of the cone}$

Here:

$r=1.75in \n \n h=3.5in$

So, substituting into the formula:

$V_(c)=(1)/(3)\pi (1.75)^2(3.5)\approx 11.22in$

The gum ball is spherical. so the volume of a sphere is:

$V_(e)=(4)/(3)\pi r^3 \n \n \n Where: \n \n r:\text{Radius of the gum ball} \n \n \n \text{We know that the diameter of this ball is} \ d=0.5in \ \text{so the radius is:} \n \n r=0.5/2=0.25in$

Therefore:

$V_(e)=(4)/(3)\pi (0.25)^3\approx 0.065$

Finally, the volume (V) of the cone that can be filled with flavored ice is:

$V=V_(c)-V_(e)=11.22-0.065 \n \n \boxed{V\approx 11.15in^3}$

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The local oil changing business is very busy on Saturday mornings and is considering expanding. A national study of similar businesses reported the mean number of customers waiting to have their oil changed on Saturday morning is 3.6. Suppose the local oil changing business owner wants to perform a hypothesis test. The null hypothesis is the population mean is 3.6 and the alternative hypothesis that the population mean is not equal to 3.6. The owner took a random sample of 16 Saturday mornings during the past year and determined the sample mean is 4.2 and the sample standard deviation is 1.4. It can be assumed that the population is normally distributed and the level of significance is 0.05. The critical t value for this problem is _______.

A bank credit card charges interest at the rate of 24% per year, compounded monthly. If a senior in college charges $1,500 to pay for college expenses, and intends to pay it in one yewhat will he have to pay? (Round your answer to the nearest cent.)$