All categories

3 years ago

You have four $10 bills and eighteen $5 bills in your piggy bank. How much money do you have?

Mathematics

2 answers:

Arlecino [84]3 years ago

5 0

4 × 10 = 40

5 × 18 = 90

90 + 40 = $130

Hope it helped!

kap26 [50]3 years ago

3 0

$ 130. I got this by multiplying ten by four and 18 by 5 and adding then together. Hope this helps!

You might be interested in

Add Linear Expressions. (4x - 1) + (-5x + 17)

dezoksy [38]

(4x - 1) + (-5x + 17)
=4x-1-5x+17
= -x +16

6 0

2 years ago

Carol is ordering bricks for two large construction jobs at the same location. The first job needs 500 bricks every day for 9 da

sergey [27]

Answer:

10,800

Step-by-step explanation:

500 X 9 = 4,500

700 X 9 = 6,300

4,500 + 6,300 = 10,800

The total number of bricks Carol needs for both jobs is 10,800.

4 0

2 years ago

Find the? inverse, if it? exists, for the given matrix. [4 3] [3 6]

True [87]

Answer:

Therefore, the inverse of given matrix is

$=\begin{pmatrix}\frac{2}{5}&-\frac{1}{5}\\ -\frac{1}{5}&\frac{4}{15}\end{pmatrix}$

Step-by-step explanation:

The inverse of a square matrix $A$ is $A^{-1}$ such that

$A A^{-1}=I$ where I is the identity matrix.

Consider, $A = \left[\begin{array}{ccc}4&3\\3&6\end{array}\right]$

$\mathrm{Matrix\:can\:only\:be\:inverted\:if\:it\:is\:non-singular,\:that\:is:}$

$\det \begin{pmatrix}4&3 \\3&6\end{pmatrix}\ne 0$

$\mathrm{Find\:2x2\:matrix\:inverse\:according\:to\:the\:formula}:\quad \begin{pmatrix}a\:&\:b\:\\ c\:&\:d\:\end{pmatrix}^{-1}=\frac{1}{\det \begin{pmatrix}a\:&\:b\:\\ c\:&\:d\:\end{pmatrix}}\begin{pmatrix}d\:&\:-b\:\\ -c\:&\:a\:\end{pmatrix}$

$=\frac{1}{\det \begin{pmatrix}4&3\\ 3&6\end{pmatrix}}\begin{pmatrix}6&-3\\ -3&4\end{pmatrix}$

$\mathrm{Find\:the\:matrix\:determinant\:according\:to\:formula}:\quad \det \begin{pmatrix}a\:&\:b\:\\ c\:&\:d\:\end{pmatrix}\:=\:ad-bc$

$4\cdot \:6-3\cdot \:3=15$

$=\frac{1}{15}\begin{pmatrix}6&-3\\ -3&4\end{pmatrix}$

$=\begin{pmatrix}\frac{2}{5}&-\frac{1}{5}\\ -\frac{1}{5}&\frac{4}{15}\end{pmatrix}$

Therefore, the inverse of given matrix is

$=\begin{pmatrix}\frac{2}{5}&-\frac{1}{5}\\ -\frac{1}{5}&\frac{4}{15}\end{pmatrix}$

4 0

3 years ago

Help me quick.............................

almond37 [142]

Answer:

angle 5 and angle 4.

Step-by-step explanation:

complementary angles are the sum of two angles that equal 90 degrees

6 0

2 years ago

The amount of mites that survive a new cancer treatment can be modeled by Y = 25(0.5)x Determine which number represents the dec

Maslowich

Answer:

Step-by-step explanation:

it is 0.5 since

y=25(0.5)x

since x is a variable that change usually describes the independent variable, and 25 is the sample that starts with, so 0.50 is the number that represent the decayed rates.

4 0

2 years ago