All categories

3 years ago

Solve for x. 3.8 + 4.5x - 1.4 = 8.25

Mathematics

2 answers:

pantera1 [17]3 years ago

7 0

I think it’s 1.3, if it’s not than I’m so sorry

Annette [7]3 years ago

6 0

Answer:

x = 1.3

Step-by-step explanation:

Eliminate fractions first. Multiply all four terms by 100. The result will be:

380 + 450x - 140 = 825

Combine like terms:

240 + 450x = 825, or

585 = 450x, or:

x = 1.3

You might be interested in

Farmer has to transport a fox, a chicken, and a sack of corn across a river. she can carry only one item at a time. if left toge

vagabundo [1.1K]

Step by step guide
1)carry the chicken over and put it there
2) farmer cross alone to carry the corn over and carry the chicken back
3) put the chicken there and carry the fox to put there with th3 corn
4) go back to get the chicken

6 0

3 years ago

a. Compute the mean price for a round-trip flight into Atlanta and the mean price for a round-trip flight into Salt Lake City. R

Vikentia [17]

Answer:

Atlanta Mean price:

= Sum of all prices / Number of prices

= (340.1 + 321.6 + 291.6 + 339.6 + 359.6 + 384.6 + 309.6 + 415.6 + 293.6 + 249.6 + 539.6 + 455.6 + 359.6 + 333.9) / 14

= 4,994.2 / 14

= $356.73

Salt Lake City mean price:

= (570.1 + 354.6 + 465.6 + 219.6 + 311.6 + 297.6 + 471.6 + 618.4 + 513.2 + 381.6 + 159.6 + 267.6 + 458.6) / 14

= 5,613.3 / 14

= $400.95

7 0

3 years ago

Which is the solution to the equation 3.5(2h+4.5)=57.75? round to the nearest tenth if necessary.

Rufina [12.5K]

Answer:

you would distribute 3.5 to 2 and 4.5 and get 7h+15.75=57.75 subtract the 15.75 and get 7h= 42 which makes h=6

6 0

4 years ago

Read 2 more answers

Find the directional derivative of the function at the given point in the direction of the vector v. h(r, s, t) = ln(3r + 6s + 9

vodka [1.7K]

Answer:

$D_\overrightarrow{\rm v}$ $h(r,s,t)=(\frac{2}{7}\overrightarrow{\rm i})*(\frac{1}{r+2s+3t})+(\frac{6}{7}\overrightarrow{\rm j})*(\frac{2}{r+2s+3t})+(\frac{3}{7}\overrightarrow{\rm k})*(\frac{3}{r+2s+3t})$

Step-by-step explanation:

First, let’s check to see if the direction vector is a unit vector:

$||v||=\sqrt{(14)^{2} +(42)^{2} +(21)^{2} } =\sqrt{2401} =49$

It’s not a unit vector. therefore let's divide the vector by its magnitude in order to convert it into a unit vector:

$\overrightarrow{\rm v}=(\frac{14}{49}\overrightarrow{\rm i})+(\frac{42}{49}\overrightarrow{\rm j})+(\frac{21}{49}\overrightarrow{\rm k})= (\frac{2}{7}\overrightarrow{\rm i})+(\frac{6}{7}\overrightarrow{\rm j})+(\frac{3}{7}\overrightarrow{\rm k})$

Now, the directional derivative is given by:

$D_\overrightarrow{\rm v}$ $h(r,s,t)=\frac{\partial h(r,s,t)}{\partial r}\overrightarrow{\rm i} + \frac{\partial h(r,s,t)}{\partial s}\overrightarrow{\rm j} + \frac{\partial h(r,s,t)}{\partial t}\overrightarrow{\rm k}$